2012–2013: Turning pro

In 2012, in his first-round qualifying match at the Australian Open, Kyrgios won the first set in a tiebreak, but his opponent Mathieu Rodrigues cruised through the second and third sets to defeat him. Kyrgios then competed on the 2012 ITF Men's Circuit for the rest of the season, competing in tournaments in Australia, Germany, Japan and Slovenia. At the end of the season, he had reached a semifinal and a quarterfinal in Australian tournaments. He finished the year ranked No. 838.

In 2013, he started the season by playing at the 2013 Brisbane International, losing in the first round of qualifying to James Duckworth. He then lost in the first round of qualifying at the 2013 Australian Open to Bradley Klahn in straight sets. After winning the Boys' Singles, Kyrgios said his goal was to reach the top 300 by the end of the year.^[30]

Kyrgios at the 2013 French Open

At the 2013 Nature's Way Sydney Tennis International, he defeated fellow Australian Matt Reid in straight sets in the finals to win his first challenger tour title at the age of 17.^[31]

Kyrgios was given a wildcard into the qualifying competition of the 2013 French Open, but on 20 May it was announced that John Millman was withdrawing from the main draw due to injury; such that, Kyrgios' wildcard was raised to the main draw. This meant he would compete in a main draw of a Grand Slam tournament for the first time.^[32] In the first round Kyrgios had the biggest win of his career to date against the former world No. 8 Radek Štěpánek in three sets, each ending in tiebreaks, giving him the first ATP Tour level win of his career.^[33] Although he lost to Marin Čilić in the following round, his ranking rose to No. 213.

Kyrgios later qualified for the 2013 US Open, where he was beaten by fourth seed David Ferrer in his opening match. He reached a new career high of No. 186 on 9 September 2013.^[34] In October, Kyrgios made the semifinal of the 2013 Sacramento Challenger, before falling to Tim Smyczek. He ended the year with a singles ranking of 182.

2014: Wimbledon quarterfinal

At the beginning of the 2014 season, Kyrgios was set to debut at the 2014 Brisbane International as a wildcard,^[35] but withdrew due to a shoulder injury.^[36] On 8 January, Kyrgios was awarded a wildcard into the 2014 Australian Open,^[37] where he won his first round match against Benjamin Becker.^[38] However, he lost in the second round to Benoît Paire, in five sets.^[39]

Kyrgios received a wildcard into the 2014 U.S. National Indoor Tennis Championships, where he lost his first round match to Tim Smyczek in three sets.^[40] Kyrgios was then forced to withdraw from numerous ATP tournaments in Delray Beach and Acapulco due to an elbow injury.^[41]

At the 2014 Sarasota Open, Kyrgios reached the final by defeating Jarmere Jenkins, Rubén Ramírez Hidalgo, Donald Young and Daniel Kosakowski. He defeated Filip Krajinović in straight sets for his second career challenger title.^[42] Following this, Kyrgios defeated Jack Sock to win the 2014 Savannah Challenger. As a wildcard at the 2014 French Open, Kyrgios was defeated in the first round in straight by Milos Raonic. Kyrgios then won his fourth career challenger title at the 2014 Aegon Nottingham Challenge, beating fellow Australian Sam Groth in straight-set tiebreaks.

Kyrgios at the 2014 Wimbledon Championships

In June, Kyrgios received a wildcard to the 2014 Wimbledon Championships. After defeating Stéphane Robert in the first round, he went on to beat Richard Gasquet in a five-set second-round thriller; wherein, he lost the first two sets and saved nine match points. In the third round, Kyrgios beat Jiří Veselý, before going on to record the biggest win of his career so far by beating World No. 1 Rafael Nadal in four sets –– becoming the first male debutant to reach the Wimbledon quarterfinals since Florian Mayer, in 2004. The 'shot of the match' was a rear-forehand, half-volley winner from between Kyrgios' legs that David Polkinghorne, of The Canberra Times, called "freakish" and "audacious".^[43][44] Kyrgios subsequently lost to Milos Raonic in four sets in the quarterfinals. This Wimbledon performance helped Kyrgios break into the top 100 of the ATP World Rankings for the first time in his career:^[45] i.e. Kyrgios' ranking rose to No. 66.^[46] Post-Wimbledon, at the Rogers Cup tournament in Toronto, Kyrgios earned his first ATP World Tour Masters event win, with a first round victory over Santiago Giraldo in straight sets.^[47] However, Kyrgios lost in the second round to Andy Murray, winning just four games.^[48]

In the US Open, Kyrgios made it to the third round, defeating Mikhail Youzhny and Andreas Seppi on his way, before losing to 16th seed Tommy Robredo. Kyrgios later played in the Malaysian Open, but lost in the first round.

He skipped the rest of the season, citing burnout. He ended the year ranked No. 52 in the world, and the No. 2 ranked Australian behind Lleyton Hewitt.

2015: First final, top 30

Kyrgios in 2015

Kyrgios started the season off at the Sydney International, but lost his opening match against Jerzy Janowicz in three tightly contested sets.

During the 2015 Australian Open, Kyrgios received direct entry for the first time due to his ranking. In his opening match, he defeated Federico Delbonis in a five-set thriller, before going on to beat Ivo Karlović and Malek Jaziri in second and third rounds, respectively. He then faced Andreas Seppi, who had just beaten Roger Federer in his previous match, in the fourth round. Kyrgios fell two sets behind and faced down a match point in the fourth set but, recovered to win in five sets. As a result, Kyrgios became the first teenage male to reach two Grand Slam quarterfinals since Federer in 2001,^[49] the first Australian male to reach the quarterfinals since Hewitt in 2005, and the first Australian of any gender to reach the quarterfinals since Jelena Dokic in 2009.^[50] In the quarterfinals, Kyrgios lost to eventual finalist Andy Murray in straight sets. After the tournament, he reached a career-high ranking of no. 35 in the world.^[51]

He later withdrew from tournaments in Marseille and Dubai due to a back injury he suffered during the Australian Open.^[52] In Indian Wells, he served for the match against Grigor Dimitrov, but rolled his ankle and ultimately lost.

Kyrgios returned in the Barcelona Open. After receiving a bye in the first round, he lost in three sets to fellow 19-year-old Elias Ymer. At the Estoril Open, Kyrgios reached the final of an ATP tournament for the first time in his career, after defeating Albert Ramos Viñolas, Filip Krajinović, Robin Haase and Pablo Carreño Busta. He then lost the final to Richard Gasquet, in straight sets.

At the Madrid Open a week later, Kyrgios defeated world No. 2 and 17-time Grand Slam champion Roger Federer in the second round, after saving two match points in the final set tiebreak.^[53] He then had a three-set loss to John Isner in the third round.^[54] At this point, until his finalist appearance at Estoril and third round finish in Madrid, Kyrgios had the unique distinction of having won more matches in Grand Slams (10) than on the regular ATP Tour (2).

At the French Open, Kyrgios was seeded 29th, his first Grand Slam seeding. He won in straight sets in the first round against Denis Istomin.^[55] He then received a walkover into the third round, after Kyle Edmund withdrew with injury.^[56] In the third round, he lost in straight sets to third seed Andy Murray.^[57] In the doubles, Kyrgios and partner Mahesh Bhupathi lost in the first round to wildcards Thanasi Kokkinakis and Lucas Pouille.^[58]

Wimbledon 2015: Madison Keys & Nick Kyrgios during their 1st round match against Barbora Strycova & Jurgen Melzer

At the 2015 Wimbledon Championships, Kyrgios opened with straight-set victories over Diego Schwartzman and Juan Mónaco in the first and second rounds, respectively.^[59][60] In the third round, despite losing the first set, he advanced past seventh seed Milos Raonic ––before losing to Gasquet in the fourth round, squandering set points in the fourth. He also played mixed doubles with Madison Keys, but only reached the second round. Kyrgios fell out of the top 40 in the rankings following the tournament.^[61]

2016: Hopman Cup champion, 3 titles, top 15

At the 2016 Hopman Cup, Kyrgios partnered with Daria Gavrilova, as part of the Australia Green team. During the round robin, Australia Green won 3–0 against Germany, with Kyrgios winning both his singles match against Alexander Zverev andmixed doubles match with Gavrilova. The Australian Green team next faced off against Great Britain; where Kyrgios recorded his first-ever win over Andy Murray (in straight sets) and also won the doubles, claiming a 2–1 win over the British team. Following this, he went on to win the Hopman Cup alongside Gavrilova, defeating Ukraine in the final – marking Kyrgios' first title on the World Tour.

At the 2016 Australian Open he claimed straight-set wins over Pablo Carreño Busta and Pablo Cuevas before losing to sixth-ranked Tomáš Berdych in the third round in 4 sets.

Kyrgios won his maiden ATP title at the Open 13 in Marseille by defeating Gasquet in the quarterfinal, Berdych in the semi-final and lastly, Čilić in the final, all in straight sets. Notably, Kyrgios finished the tournament without having his serve broken.

During the Dubai Tennis Championships Kyrgios reached the semifinals, where he retired against Stan Wawrinka. At the 2016 Indian Wells tournament, he lost in the first round to Albert Ramos Viñolas.

At the 2016 Miami Open Kyrgios reached his first ATP World Tour Masters 1000 semifinal, with straight-set wins over Marcos Baghdati, Tim Smyczek, Andrey Kuznetsov and Milos Raonic – before losing in the semis to Kei Nishikori. Following Miami Open, Kyrgios entered the top 20 for the first time, becoming the youngest player to do so since Čilić seven years earlier.

At the French Open, Kyrgios entered as the 14th seed and went on to beat Marco Cecchinato and Igor Sijsling, reaching the third round; however, he lost to 9th seed Gasquet. Similarly, at Wimbledon (as the 15th seed), he advanced to the fourth round after defeating Radek Štěpánek, Dustin Brown and Feliciano López – losing to eventual champion Murray.

In Atlanta, as the second seed, Kyrgios advanced to the final after defeating wildcard Jared Donaldson, Fernando Verdasco and Yoshihito Nishioka. In the final, Kyrgios faced three-time defending champion Isner and defeated him to win his second ATP title. Kyrgios reached a career-high ranking of No. 16 following the tournament.

Kyrgios playing at the 2016 US Open

At the US Open, Kyrgios reached the third round against Illya Marchenko before retiring with a hip injury that had also affected him in previous rounds. He returned with a straight-set win in his rubber for Australia in the Davis Cup World Group playoff.

In October, after a second-round loss to Kevin Anderson at the 2016 Chengdu Open, Kyrgios bounced back by winning his first ATP World Tour 500 series title in Tokyo, at the 2016 Japan Open Tennis Championships, beating David Goffin.

2017: First Masters final

At the 2017 Australian Open, Kyrgios was seeded 14th. He defeated Gastão Elias before falling to Andreas Seppi in round two, despite leading by two sets to love. At the Mexican Open, Kyrgios defeated Novak Djokovic in straight sets in the quarter-finals. Djokovic managed to win just 20.5% of return points in the match, his lowest ever in a tour match. Kyrgios fell to eventual champion Sam Querrey in 3 sets in the semifinals. Kyrgios defeated Djokovic again in straight sets in the fourth round of the Indian Wells Masters tournament. He then withdrew from his quarterfinal match with Federer due to illness. He moved to Miami, where he beat Goffin and Zverev before losing in the semifinals in three tiebreak sets to Federer in three hours and ten minutes.

Kyrgios then participated in Madrid, where he lost in straight sets in the third round to Nadal. At Roland Garros, Kyrgios lost to Kevin Anderson in the second round after winning the first set. He then withdrew from his first-round matches at Queen's Club, Wimbledon and Washington due to injuries. After his recent slump in form, Kyrgios then reached the third round of the Montreal Masters, where he lost to Zverev in straight sets. In the Cincinnati Masters, Kyrgios made it to the quarterfinals, where he defeated world No. 2 Nadal in straight sets. He followed that up with a victory over Ferrer to reach his first Masters 1000 final, where he lost to Grigor Dimitrov in straight sets. At the China Open, he was crushed by Nadal in the final. Kyrgios's record against Nadal fell to 2–3 with this loss.

In the inaugural 2017 Laver Cup, Kyrgios competed for Team World, replacing Milos Raonic following his withdrawal from the tournament.^[62] In doubles, Kyrgios partnered with Jack Sock, defeating Tomas Berdych and Rafael Nadal and earning Team World's only point on Day 1.^[63] In singles, Kyrgios defeated Tomáš Berdych, earning Team World's only points on Day 2.^[63] Kyrgios went on to play a match tie-break with Roger Federer on Day 3, which would have forced a deciding doubles match.^[64] However, Federer defended the match point and went on to win: resulting in an overall victory for Team Europe (15–9).^[64]

2018: Clay season absence

In his first tournament of the season at the 2018 Brisbane International, Kyrgios received a bye into the second round due to being the 3rd seed. In his first competitive match since the 2017 European Open, Kyrgios lost the first set to his compatriot Matthew Ebden in a tiebreak but found his form and won in three sets. He reached the final, defeating Ryan Harrison to win his first title since Tokyo 2016. The win returned him to the top 20, at no. 17.

In the third round of the 2018 Australian Open, Kyrgios defeated Jo-Wilfried Tsonga in four sets. He was then beaten by Grigor Dimitrov in tight four setter, with the latter winning three tiebreaks.^[65] Kyrgios served 36 aces in that match.^[66]

After the Australian Open, Alexander Zverev defeated Kyrgios in four sets at the Davis Cup. It was soon revealed that he was playing with an elbow injury. In light of this, he cancelled appearances at the Delray Beach Open and Indian Wells Masters tournament. He resumed his season at the Miami Open, defeating Dušan Lajović and Fabio Fognini in straight sets before falling to Zverev in straight sets.^[67] Kyrgios weathered a lackluster clay season and did not play at the French Open, citing the elbow injury that spoiled the first quarter of 2018.^[68]

Kyrgios and Jackson Withrow of the USA were knocked out of the first round doubles match by Sriram Balaji and Vishnu Vardhan. His next tournament, the Stuttgart Open, saw him reach the semifinals, falling to eventual champion Federer.^[69] After Stuttgart, Kyrgios entered the Queen's Club Championships. His won his first-round match over former world No. 1 Murray. This was notable as it was Murray's return to the tour since Wimbledon 2017 and Kyrgios's first professional win over Murray after five prior attempts. He was defeated in the semifinals by Čilić in two tiebreaks. At Wimbledon, Kyrgios defeated Istomin and Haase but lost to Nishikori in straight sets in the third round.

His campaign in the 2018 US Open generated controversy. In his second-round match, Kyrgios appeared to be given advice by umpire Mohammed Lahyani that seemed to turn the tide in match against Pierre-Hugues Herbert, which he won. Kyrgios's US Open run ended in the next round with a loss to Federer, who saw him out in straight sets.

At the annual Laver Cup, Kyrgios was defeated by Federer in straight sets. He then won the doubles with Jack Sock against Grigor Dimitrov and David Goffin. At the Shanghai Open, he was accused of tanking by the chair umpire before losing to world No. 104 Bradley Klahn. His last event on the ATP tour was a wildcard draw at the Kremlin Cup. He defeated Andrey Rublev in three sets before withdrawing against his next opponent, Mirza Bašić, citing an elbow injury. He also revealed weeks later that he was seeing psychologists to improve his mental health.

2019: Two titles, a default, and a suspension

Kyrgios began 2019 at the Brisbane International, where, in a rematch of last year's final, he defeated Ryan Harrison in the round of 32. He subsequently lost to Jérémy Chardy. His middling performance in his home country culminated in a straight-sets opening round loss to Milos Raonic at the 2019 Australian Open.^[70]

Kyrgios won the 2019 Mexican Open in Acapulco (his fifth title), after beating three top 10 players (i.e. Nadal, Isner and Zverev) and three-time Grand Slam champion Stan Wawrinka, en route.^[71] His Miami Open campaign was full of controversy: a victory over Dušan Lajović in the third round involved two successful underarm serves and an altercation with a spectator, and the follow-up loss to Borna Ćorić in the round of 16 involved another argument with a spectator and both players smashing racquets.^[72] Following his loss, he acknowledged his opponent's more disciplined nature and questioned his own motivation.

In Rome, Kyrgios beat Daniil Medvedev but then lost his next match to Casper Ruud by default in the third set when he threw a chair on the court after swearing at a linesperson.^[73] He forfeited the rankings points and prize money, but no further penalties were imposed.^[74] At Wimbledon, Kyrgios defeated compatriot Jordan Thompson in a five-setter, but then lost to Nadal in four sets in the second round.

Kyrgios won his sixth title in Washington beating two top 10 players en route. He overcame first seed Stefanos Tsitsipas in the semi-final in three sets, and third seed Daniil Medvedev in the final in straight sets.^[75] At the US Open, Kyrgios progressed to the third round where he lost to Andrey Rublev in straight sets in another controversial match, complaining that he was being blinded by the stadium lights while serving.^[76] At the annual Laver Cup, Kyrgios was again defeated by Federer, this time in a closer three-set match with a deciding match tiebreak. He teamed up with Jack Sock once again for the doubles, which they won against Rafael Nadal and Stefanos Tsitsipas.^[77]

Following the incident at the 2019 Cincinnati Masters tournament, where Kyrgios was fined $113,000 for five separate incidents of unsportsmanlike conduct, the ATP conducted an investigation into his behaviour. The investigation ended on September 26, and he was issued a 16-week suspended ban, a $25,000 fine, and a six-month probationary period.^[78] Although Kyrgios had corrected his comments by saying that "corrupt" was not the right choice of words, the ATP explained that a second investigation had taken place after his comments at the US Open.^[79]

2020: Longest career match

At the 2020 Australian Open, Kyrgios was seeded 23rd. In the first round, he beat Lorenzo Sonego in straight sets before defeating Gilles Simon in four sets in the second round. In the third round, he defeated Karen Khachanov in the longest match of both his career and the 2020 Australian Open, lasting 4 hours and 26 minutes. He then played Rafael Nadal in the fourth round, which he lost in four sets. Kyrgios played alongside Amanda Anisimova in the mixed doubles, where they ended up losing in the second round.^[80]

At the 2020 Mexican Open, Kyrgios attempted to defend his 2019 title, but retired from his first round match against Ugo Humbert, due to a wrist injury.^[81] Kyrgios withdrew from the 2020 US Open, choosing to avoid taking health risks amid the COVID-19 pandemic.^[82]

Kyrgios ended 2020 with a singles rank of No. 45.

2021: Tournament withdrawals, knee injury

At the 2021 Australian Open, Kyrgios lost in the third round to Dominic Thiem despite at one stage leading by two sets to love.

Kyrgios playing at the 2021 Australian Open

In April, Kyrgios announced he would play in the Mallorca Open.^[83] He followed this by also announcing that he would play in the Stuttgart Open, but withdrew from both tournaments.^[84][85] He entered Wimbledon to continue his return to competitive tennis, and won his opening match against 21st-seeded Ugo Humbert in a five-set match that stretched out over two days. In the second round Kyrgios beat Gianluca Mager in straight sets. In the third round against Félix Auger-Aliassime, with the match tied at one set each, he retired after the second set due to an abdominal injury.^[86]

Kyrgios failed to defend his title in Washington, losing in the first round to Mackenzie McDonald in straight sets. At the US Open, he lost in the first round to Roberto Bautista Agut in straight sets.

Kyrgios then competed for Team World at the Laver Cup for the fourth consecutive year. He lost his singles match to Stefanos Tsitsipas and partnered with John Isner in doubles, where they lost to Tsitsipas and Andrey Rublev. After the conclusion of the Laver Cup, on 28 September 2021, Kyrgios announced he was ending his 2021 season due to a knee injury.^[87]

He ended 2021 with a singles ranking of 93.

2022: Wimbledon final, Australian Open doubles title, ATP Finals and return to Top 20

Kyrgios withdrew from the Melbourne Summer Set ATP 250 tournament after feeling run down for four days due to asthma.^[88][89] On January 10, he tested positive for COVID-19 and also had to withdraw from the Sydney Tennis Classic.^[90] As a result, he dropped to No. 114 on the ATP rankings, the first time he had been out of the top 100 since June 2014.

At the 2022 Australian Open, he won his first round match in straight sets against qualifier Liam Broady. He was subsequently defeated in the second round by top seed Daniil Medvedev over four sets.^[91] In doubles, Kyrgios partnered with Thanasi Kokkinakis to defeat the world No. 1 doubles team, Nikola Mektić and Mate Pavić, en route to the quarter-finals. Following their success in the quarter-finals and semi-finals, this set up the first all-Australian doubles final (since 1980) against Matthew Ebden and Max Purcell. Kyrgios and Kokkinakis won in straight sets, becoming the first all-Australian men's doubles champions (at the Australian Open) since The Woodies in 1997.^[92] Moreover, Kyrgios and Kokkinakis are the first wildcard pairing in the Open era to win the Australian Open men's doubles title.^[93] As a result, Kyrgios moved to the top 40 in the doubles rankings on 31 January 2022, rising 219 spots.^[94]

Kyrgios next received a wildcard into the main draw at Indian Wells, California. He beat Sebastián Báez and Federico Delbonis, in straight sets, to get to the third round; where he then beat world No. 8 Casper Ruud. He received a walkover in the fourth round following the withdrawal of Jannik Sinner, but then lost in 3 sets to Rafael Nadal in the quarterfinals.^[95] He had less success in doubles (partnered Kokkinakis), as the pair lost in the second round to eventual champions John Isner and Jack Sock.

In Miami, he advanced to the fourth round, but was beaten in straight sets by Jannik Sinner.^[96] In doubles, Kyrgios and Kokkinakis finished up in the semifinals, again losing to the eventual champions Isner and Hubert Hurkacz. Kyrgios then reached the semifinals in Houston, his sole clay court event of the year, losing to Reilly Opelka in the semifinals.^[97] In Stuttgart, his first grass tournament of the year, Kyrgios reached the semi-finals where he lost to Andy Murray. In Halle, Kyrgios beat second seed and world No. 6 Stefanos Tsitsipas^[98] and sixth seed Pablo Carreno Busta^[99] on his way to his third tour-level semifinal of 2022, before losing to Hubert Hurkacz.^[100]

At the 2022 Wimbledon Championships, Kyrgios beat wildcard Paul Jubb in 5 sets, but was fined US$10,000 for verbally abusing a line judge and spitting in the direction of a spectator.^[101] He then went on to beat Filip Krajinović and Tsitsipas (for the second time during the grass season), to reach the fourth round. Following this, Kyrgios beat Brandon Nakashima to reach his first major quarterfinal since the 2015 Australian Open. He followed this with a shut out win over Cristian Garín and reached his first ever Major semifinal.^[102] Kyrgios then reached his first major final after Rafael Nadal withdrew from the semifinals,^[103] becoming the first player in the Open Era to get a walkover into the Wimbledon final.^[104][105] Kyrgios lost the Wimbledon final to Novak Djokovic in a competitive match lasting over three hours.^[106]

In Atlanta, Kyrgios withdrew from the singles tournament, but went on to win his second doubles title with Kokkinakis, defeating fellow Australians Jason Kubler and John Peers in straight sets. In Washington, Kyrgios won his first singles title in 3 years and his second Washington Open singles title –– defeating Marcos Giron, Tommy Paul, Reilly Opelka, Frances Tiafoe and Mikael Ymer en route to the final against Yoshihito Nishioka, where he won in straight sets. In the doubles, Kyrgios partnered with Jack Sock, where after receiving a walkover in the semifinals, they defeated Ivan Dodig and Austin Krajicek to win the Washington Open doubles title. As a result, Kyrgios became the first player to win both the singles and doubles titles at Washington in the same year in the tournament's history.

At the Canadian Open, Kyrgios defeated top seed Daniil Medvedev in the second round.^[107] Next he defeated his compatriot Alex de Minaur but eventually lost to Hubert Hurkacz in the quarterfinals.^[108] At the Cincinnati Masters, Kyrgios was defeated in the second round by Taylor Fritz in a match only lasting 51 minutes.^[109]

At the US Open, Kyrgios defeated Thanasi Kokkinakis, Benjamin Bonzi and wildcard JJ Wolf to reach the fourth round at the US Open for the first time in his career. He then defeated world No.1 Danill Medvedev in four sets to reach the quarterfinals at the event for the first time. With his win over Medvedev, Kyrgios became the first Australian player to beat the world No. 1 twice within the same year, since Pat Cash in 1987.^[110] In the quarterfinals, he faced off against Russian 27th seed Karen Khachanov, losing a closely fought match in five sets. Despite the loss, Kyrgios returned to the Top 20 for the first time since February 2020 and reclaimed the No.1 Australian position, overtaking Alex de Minaur.^[111]

In October, Kyrgios reached the quarterfinals of the Japan Open, but withdrew before his clash with Taylor Fritz, citing a knee problem as the cause for his exit.^[112]

Kyrgios, along with doubles partner Thanasi Kokkinakis qualified for the 2022 ATP Finals in Turin after being guaranteed a spot under the Grand Slam champion provision.^[113] The pair failed to progress past the round robin stage of the event after recording a 1-2 win-loss record.

Kyrgios ended the season ranked No. 22 in singles and No. 13 in doubles. This was Kyrgios' highest end-of-year doubles ranking of his career.

2023: Knee injury and Australian Open withdrawal, 2023 and 2024

Kyrgios was scheduled to participate in the inaugural United Cup to begin his season, representing Australia, however withdrew on the eve of the event following an ankle injury.^[114] Kyrgios subsequently withdrew from the Adelaide International 2 event the following week as a precaution in the lead up to the Australian Open.^[115] On 13 January, Kyrgios competed in an exhibition match against Novak Djokovic on Rod Laver Arena in a Fast4 format. Kyrgios defeated Djokovic in three-sets in front of a sold-out crowd.^[116] Just days later, on the eve of the 2023 Australian Open, Kyrgios withdrew from the event due to a knee injury.^[117] He revealed a cyst caused by a tear in his lateral meniscus will require arthroscopic surgery.^[117][118]

Kyrgios had arthroscopic surgery on his left knee in January 2023. The expected recovery time was initially 3 months. He withdrew from Indian Wells and Miami because the rehab process was still ongoing. He was expected to return during the French Open but had a foot injury during an armed robbery at his home.^[119] With a single game played in 2023 in the Stuttgart tournament, Kyrgios did not realise this was to be his last match of the year.^[120] Kyrgios was then preparing for Wimbledon in June but during a practice session he tore a ligament in his wrist.^[121] He spent the rest of 2023 out due to injury and he has announced that he will return for the 2024 grass season.^[122]

In December 2023 Kyrgios announced that he would be unable to play in the Australian Open in January 2024 due to ongoing injury concerns. Some experts believe that multiple injuries may accelerate his retirement. ^[123][124] Mark Phillipousis, also a tall player who had multiple knee injuries, has suggested that it is dangerous to return too soon.^[125][126]

Although Kyrgios has fallen off the rankings (he no longer has any ranking points as of October 2023) he has a protected ranking (PR) of 21^[127] and can use this for 9 months after his return to the tour. He can also accept wild cards to any tournament where he has reached the semi-finals.

ATP Cup

Kyrgios played in the inaugural ATP Cup in 2020 in Brisbane and in the Sydney finals. He won three straight singles matches against Jan-Lennard Struff of Germany, Stefanos Tsitsipas of Greece and Cameron Norrie of Great Britain respectively, as well as a doubles match alongside Alex de Minaur to defeat Great Britain in the quarter-finals. He eventually lost to Roberto Bautista Agut in the semi-finals against Spain in straight sets.^[128]

Davis Cup

Nick Kyrgios has represented Australia eleven times at the Davis Cup in both singles and doubles on all surfaces. His win-loss record is 11-6 with most of his wins coming on hard courts.^[129]

Kyrgios made his Davis Cup debut for Australia in September 2013 against Poland at the age of 18.^[130] He replaced Marinko Matosevic after defeating him in a playoff during the lead-up to the tie. He was selected to pair with Chris Guccione in the crucial doubles rubber. They lost to Mariusz Fyrstenberg and Marcin Matkowski in five sets. He then went on to win his first singles rubber, after Michał Przysiężny retired five games into the match.^[131][132] Australia won the tie 4–1.

In 2014 Australia was drawn to play a very strong France and lost the tie 5-0. Kyrgios lost both his singles matches against Richard Gasquet and Gaël Monfils. Australia was relegated to the World Group Play-offs and were drawn against Uzbekistan in September. Australia beat Uzbekistan 5–0. Kyrgios won both his matches against Denis Istomin and Sanjar Faiyziez. Australia returned to the World Group.

In 2015 Kyrgios was selected to play in the quarter finals against Kazakhstan. He lost his singles match in 4 close sets, was injured and was then replaced by Sam Groth in the reverse singles rubber. Australia won the tie 3–2. He was dropped from the Davis Cup squad due to play their semi-final tie against Great Britain.^[133] Australia lost 2-3. He returned to the Davis Cup team in September 2016 for Australia's emphatic World Group playoff victory against Slovakia. Kyrgios won his singles tie in straight sets.

In 2017 Australia was drawn to play the Czech Republic in the first round and won the tie 4–1. Kyrgios won his singles match in straight sets.

Kyrgios led the team to the quarter finals in May where they played in Brisbane against the USA. He beat both John Isner and Sam Querrrey in straight sets including four tie breakers and Australia won the tie 3-2. He led Australia into the semi-finals against Belgium which were played at home in Brussels with a vocal home crowd. He beat Steve Darcis in 5 sets but lost to captain David Goffin in four. Australia lost the semi-finals tie 3–2.

In 2018 Australia was drawn to play Germany in the World Group first round. Kyrgios again led the team and beat Jan-Lennard Struff in three sets. Needing pain killers to continue the next day, he played Alexander Zverev but lost his match in straight sets. Australia lost the tie 3–1.

That was the last year in which the Davis Cup was played in the old 'Home and Away' five set, three day setup. The finals went to Spain.

In 2019, Kyrgios was left out of the Davis Cup team for their qualifier in Adelaide, which they won against Bosnia and Herzegovina. He was re-added to the team later in the year for the Davis Cup Finals in Spain.^[134] In Spain, he won his singles rubbers against Colombia and Belgium to advance to the quarter-finals against Canada. He then withdrew from the quarter-finals due to a collar bone injury and was replaced by John Millman. Australia ended up losing the tie 1–2.^[135][136]

Davis Cup was not held during the pandemic and Australia was eliminated in 2021. Kyargios ended his season early due to a knee injury and was unavailable. During 2022 Kyrgios was not available due to overplaying and ankle injury. Australia reached the finals under Alex de Minaur but lost. Kyrgios was chosen for the 2023 United Cup but was unable to play because of an ankle injury. A few weeks later he had major surgery on his knee.

Australia again got to the finals but lost in the 2023 Davis Cup. There has been speculation whether Australia might have been successful if Kyrgios had been able to play as a second to de Minaur and he hopes to be able to play again after full recovery.^[137]

Underarm serve

Kyrgios first used the underarm serve at the 2019 Mexican Open during his match with Rafael Nadal, who subsequently claimed it was not within the spirit of the game, and accused Kyrgios of "lacking respect" for his opponent and the crowd.^[143]

Kyrgios has been credited for reintroducing the underarm serve into the ATP Tour, and he has now used the underarm serve more frequently than any other player in professional tennis.^[144][145]

Early career

Kyrgios won his first challenger tour title at the age of 17.^[31] He was often described as someone with great dedication to the game, with those around him, such as his childhood coach, Andrew Bulley, saying he was a 'super competitor' who 'trained with a better intensity than the other kids',^[163] and his father, describing him as a 'perfectionist'.^[164] After defeating the 18 year old Kyrgios in the 2014 Davis Cup World Cup tie, top French player Richard Gasquet said, "He's got a great attitude and a wonderful personality. I think he will be a prominent player in the future".^[20]

Andrew Bulley believes the support of Kyrgios' close knit family was a critical factor in his attitude and motivation at the time.^[165] He was close to his family and friends, but as he rose through the rankings, playing in tournaments all over the world meant that he was away from home for long periods. He said: "I was winning, losing, going through relationship problems, dealing with other problems and I was pushing (family) away because you feel like the world's against you. I'm going seven months a year abroad in a new place every week. That's why tennis is so hard in my opinion."^[166] According to his mother, Nill Kyrgios, this was a very hard time for her son as a result of the criticism and pressure he was under.

Current public perception

Kyrgios is now known as a talented but mercurial^{[167][168][169]} and hot-tempered player.^{[170][171][172]} He has been accused of tanking, verbal abuse, and unsportsmanlike conduct by umpires, match referees, the media and by former tennis players, including John McEnroe.^[173] In 2019, the Associated Press described Kyrgios as "a volatile sort who has repeatedly got in trouble for on-court actions".^[174] He is also known for his authenticity^[175] and individuality,^[61] and has been described by three-time Wimbledon champion John Newcombe as an "exceptional talent" and "a real individual".^[61]

Kyrgios has openly said that he "does not love tennis" and has a greater interest in basketball.^[176] He openly critiqued his dedication to the sport after his exit at the 2017 US Open to fellow Australian John Millman, saying that he is "not dedicated to the game at all" and "There are players out there that are more dedicated, that want to get better, that strive to get better every day, the one-percenters. I'm not that guy."^[177]

Some commentators believe Kyrgios is more committed than he claims. After a string of successes in 2017, Kyrgios attributed his greater consistency that year to an improved work ethic. He said: "I've made an effort to try and put in the work every day. It hasn't been easy."^[178] However, he continues to cause controversy on the court. Hugh van Cuylenburg, founder of the Resilience Project in Australia says Kyrgios is deliberately provocative and thrives when there is chaos around him: "Some people thrive in a hostile environment because it tricks them into the right level of arousal and reminds them of how much they care and how much they want to win – and Kyrgios is one of those."^[179]

Kyrgios produced some of the best performances of his career at Wimbledon in 2022. After losing to Djokovic in the final, Kyrgios said: "It's taken me 10 years – almost 10 years – in my career to finally get to the point of playing for a grand slam and coming up short, but my level is right there."^[180] When asked if this had made him hungry for more grand slam finals, he replied "no, it was exhausting!", provoking laughter among the crowds.

Opinions on Kyrgios held by other tennis professionals

Off the court

Controversial incidents

Kyrgios has been involved in a number of controversial incidents during tennis matches, mostly during his early career.

During a match at the 2015 Rogers Cup, Kyrgios generated considerable controversy for insults he directed at Stan Wawrinka in the middle of the match. Kyrgios, speaking aloud but not directly to Wawrinka, said: "Kokkinakis banged your girlfriend. Sorry to tell you that, mate". Microphones also picked up Kyrgios saying under his breath that Wawrinka, 30 at the time, was "banging 18-year-olds".^[196] After the match, Wawrinka said he found the comments "unacceptable" and urged action be taken against Kyrgios.^[197]

Kyrgios was fined $13,127 and given suspended penalties of $32,818 and a 28-day ban, pending further breaches by the ATP. He claimed he later apologised to Wawrinka^[198][199] though Wawrinka denied this claim.^[200] Kyrgios's mother shut down her Twitter account several hours after this incident after personal criticisms were levelled at her. She indicated that her son's insults had been made in retaliation, and that Wawrinka accused her son of "faking an injury" during a previous match between the two.^[201]

Following a review, the ATP handed down a 28-day suspended sentence, to expire after six months. Kyrgios would also have received a $25,000 fine had he incurred a further fine for "verbal or physical abuse" during that six-month period.^[202]

At the 2019 Rome Masters, Kyrgios was defaulted from his second round encounter with Casper Ruud after swearing at a line judge, kicking a bottle, and hurling a chair onto court. The default followed the three warnings rule which Kyrgios accepted immediately and shook hands with the referee, supervisor and opponent. The referee and supervisor had tried many times to quell a heckling group without success.^[203][204] From that point Kyrgios has never played the clay swing along with other players distressed by heckling. The 2023 clay season was extremely rowdy and measures trialled at Rolland Garros 2023 are being put in place to protect players from physical and social media abuse.^{[205][206][207]}

Mental health issues

At age 19, ranked 144th in the world, he received a wildcard entry to play at Wimbledon and beat then-world No. 1 Nadal in the fourth round. Beating Nadal, the first time he played against him, brought international attention. From then on he was told: "you're the next big thing in tennis." Kyrgios admits he didn't know how to deal with the pressure. He told the Turn Up the Talk podcast in May 2022: "I kept trying, trying and trying, just ended up snowballing into this dark cloud."

Things became so difficult for him that Kyrgios posted on Instagram that in 2018 he suffered from depression and engaged in self-harm and had suicidal ideation.^[208] In an interview on the Turn Up The Talk podcast, he explained that in 2019, even when he was winning tournaments: "[I was] probably drinking 20 to 30 drinks every night – you know, just in my room on my own – waking up [and] playing." Kyrgios said that "winning tournaments seemed to 'just mask all of it', which was the 'darkest thing ever'."^[209][210] Struggling to cope, he sought professional help and saw three or four different psychologists.^[211]

Relationships

Kyrgios was previously in a relationship with Croatian-Australian tennis player Ajla Tomljanović.^[218][219] In December 2021, Kyrgios started dating social-media influencer and interior designer Costeen Hatzi.^[220][221]

Television and film

In May 2019, Kyrgios was interviewed by New York Times tennis writer Ben Rothenberg on his long-running podcast No Challenges Remaining, episode 226. During this frank and at times revealing discussion Kyrgios explained the background behind some of his early controversial incidents.^[225]

In October 2020, Kyrgios appeared in the inaugural episode of ABC's show Reputation Rehab, a reality TV show which aimes to rescue public figures from a lifetime of cancellation.^[226][227]

Kyrgios appears in the tennis docuseries Break Point, which premiered on Netflix on January 13, 2023.^{[228][229][230]}

In Episode One Kyrgios and Thanassi Kokkinakis feature in their road to their grand slam doubles title.^[230]

"The Maverick: Nick Kyrgios, whose reputation as tennis' `bad boy' threatens to overshadow his talent, fights to find joy on the court at the 2022 A2 Australian Open."^[229]

In Episode Six two Australian players are featured. Kyrgios' struggles with suicidal thoughts and depression are revealed.^[231]

"Belonging: Wimbledon is the cathedral of tennis, and the oldest Grand Slam represents the pinnacle of the sport; Nick Kyrgios is ready to prove he can finally reach his singles potential; Ajla Tomljanovic seeks to overcome personal and professional heartbreaks."^[232]

In Episode Seven The 2022 Wimbledon finalists are highlighted including Ons Jabeur and Nick Kyrgios.^[233] He praises his opponent Novak Djokovic.^[234]

"Saints and Sinners: Ons Jabeur pursues her first Grand Slam; Nick Kyrgios plays brilliantly amid a cloud of scandal; in the final, Jabeur's finesse comes under attack from Elena Rybakina's massive serve; Kyrgios goes head to head with defending champion Novak Djokovic."

Kyrgios featured in the documentary film Australia's Open which was chosen to be part of the Melbourne International Film Festival 2023.^[235]

In July 2023 Kyrgios was invited to speak at CNBC X Boardroom's Game Plan Conference for Innovators and Thought Leaders alongside Kevin Durant and Andrew Sorkin on the subject of 'The Future of Tennis and Athlete Brand Building'.^[236]

Kyrgios was the featured guest of Mike Tyson in his October podcast Hotboxin' with Mike Tyson during which Kyrgios discussed his fines, fans and future.^[237][238]

Kyrgios was a guest commentator and analyst on Tennis Channel for the ATP Nitto finals 2023 alongside Andy Roddick and Jim Courier.^[239]

In October 2023, Kyrgios was a guest on the Rich Eisen Show, where he discussed the comparison between playing professional tennis and other sports, describing how it felt to be a finalist at Wimbledon and how he was learning to control his temper.^[240]

In November 2023 Kyrgios featured on the award-winning podcast The Pivot^[241] hosted by NFL heroes Fred Taylor, Ryan Clark and Channing Crowder. The podcast has as its theme 'Accept, Adjust, Move Forward' and uses celebrity sportspersons who are entering this process. The extended interview entitled 'Tennis' Nick Kyrgios, Player vs Human, Outspoken but Never Outmatched', covered Kyrgios's experiences with media treatment and racism, social media hate, discipline, training intensity, imposter syndrome, the origins of 'tanking', despair and mending relationships.^[242]

On 1 December 2023, Kyrgios was a guest on the high profile British TalkTV show Piers Morgan Uncensored. Called Piers Morgan vs Nick Kyrgios,^[243] the hour-long show covered 'historical spats with Piers, being the 'villain' of tennis and how he used it to be successful, his conflicts with other Australian athletes,^[244] how Andy Murray reached out to help him during his darkest moments off the court,^[245] his return to tennis, the pressure athletes face in competitive sports, his experience with racism,^[246] his mother being held at gunpoint' and the highs and lows of his playing career.' The unfiltered show was very well received and reported in media around the world.^[247][248]

On 11 December 2023, Kyrgios was a guest of Jay Shetty on the award-winning American podcast^[249] The series, entitled On Purpose, aims to help viewers become 'happier, healthier and more healed'. Kyrgios describes the exhaustion of life as a top level athlete, and considers his future in tennis and the effect of injuries on lifestyle.^[124]

Grand Slam tournament performance timelines

Grand Slam tournament finals

Singles: 1 (1 runner-up)

Result	Year	Tournament	Surface	Opponent	Score
Loss	2022	Wimbledon	Grass	Novak Djokovic	6–4, 3–6, 4–6, 6–7(3–7)

Doubles: 1 (1 title)

Result	Year	Tournament	Surface	Partner	Opponents	Score
Win	2022	Australian Open	Hard	Thanasi Kokkinakis	Matthew Ebden Max Purcell	7–5, 6–4