2008

Although losing to No. 134 Jan Hernych in the final qualifying round, Kamke reached the main draw in singles of the Wimbledon Championships as a lucky loser. However, he then lost his first match to world No. 30, Andreas Seppi.

2010

He made the main draw at Wimbledon where he progressed through to the first and second rounds and then lost to 10th seed Jo-Wilfried Tsonga, 1–6, 4–6, 6–7. In July, he won the Challenger Banque Nationale de Granby by beating Milos Raonic in the final, 6–3, 7–6. At the Tiburon Challenger, he secured his second career Challenger title by defeating Ryan Harrison in the final. He reached back-to-back second rounds on ATP World Tour-level at Stockholm, Vienna and Basel.

As Kamke started the year as world No. 254 and finished it as world No. 67, he was awarded "Newcomer of the Year" by the ATP.

2011

2011 saw Kamke reach career-high rankings in both singles (world No. 64 in January) and doubles (world No. 419 in October).

2012

Kamke faced Roger Federer in the first round of the French Open. He led Federer by 4–1 in the second set before losing 2–6, 5–7, 3–6. In September, he reached a new career-high in doubles at world No. 256.

2022

Kamke announced his retirement in July 2022 and played his last professional match at the Hamburg European Open in the doubles tournament with Dustin Brown; they lost in the first round.^[1]

Singles: 20 (11–9)

Result	W–L	Date	Tournament	Tier	Surface	Opponent	Score
Loss	0–1	Jun 2004	Germany F8, Leun	Futures	Clay	Kornel Bardoczky	2–6, 3–6
Win	1–1	Jul 2006	Austria F4, Anif	Futures	Clay	Matthias Bachinger	6–1, 7–6(9–7)
Win	2–1	Aug 2006	Germany F11, Essen	Futures	Clay	Maxime Authom	6–1, 6–4
Win	3–1	Feb 2007	Germany F4, Mettmann	Futures	Carpet (i)	Dieter Kindlmann	6–2, 4–6, 6–3
Loss	0–1	Nov 2007	Helsinki, Finland	Challenger	Hard (i)	Steve Darcis	3–6, 6–1, 4–6
Loss	0–2	May 2008	Karlsruhe, Germany	Challenger	Clay	Teymuraz Gabashvili	1–6, 4–6
Loss	0–3	Apr 2010	Baton Rouge, United States	Challenger	Hard	Kevin Anderson	7–6(9–7), 6–7(7–9), 1–6
Loss	0–4	May 2010	Fürth, Germany	Challenger	Clay	Robin Haase	4–6, 2–6
Win	1–4	May 2010	Granby, Canada	Challenger	Hard	Milos Raonic	6–3, 7–6(7–4)
Win	2–4	Oct 2010	Tiburon, United States	Challenger	Hard	Ryan Harrison	6–1, 6–1
Win	3–4	Nov 2011	Loughborough, Great Britain	Challenger	Hard	Flavio Cipolla	6–2, 7–5
Loss	3–5	Jul 2012	Braunschweig, Germany	Challenger	Clay	Thomaz Bellucci	6–7(4–7), 3–6
Win	4–5	Sep 2012	Pétange, Luxembourg	Challenger	Hard (i)	Paul-Henri Mathieu	7–6(9–7), 6–4
Win	5–5	Sep 2013	Pétange, Luxembourg (2)	Challenger	Hard (i)	Paul-Henri Mathieu	1–6, 6–3, 7–5
Win	6–5	Jun 2014	Fürth, Germany	Challenger	Clay	Íñigo Cervantes	6–3, 6–2
Win	7–5	Aug 2015	Liberec, Czech Republic	Challenger	Clay	Andrej Martin	7–6(7–4), 6–4
Win	8–5	Mar 2016	Kazan, Russia	Challenger	Hard (i)	Aslan Karatsev	6–4, 6–2
Loss	8–6	Apr 2017	Saint-Brieuc, France	Challenger	Hard (i)	Egor Gerasimov	6–7(3–7), 6–7(5–7)
Loss	8–7	Mar 2018	Lille, France	Challenger	Hard (i)	Grégoire Barrère	1–6, 4–6
Loss	8–8	Jul 2019	Braunschweig, Germany	Challenger	Clay	Thiago Monteiro	6–7(6–8), 1–6

Doubles: 7 (3–4)

Result	W–L	Date	Tournament	Surface	Partner	Opponents	Score
Loss	0–1	Feb 2010	Kazan, Russia	Hard (i)	Julian Reister	Jan Mertl Yuri Schukin	2–6, 4–6
Loss	0–2	Sep 2013	Pétange, Luxembourg	Hard (i)	Benjamin Becker	Ken Skupski Neal Skupski	3–6, 7–6(7–5), [7–10]
Win	1–2	Oct 2014	Rennes, France	Hard (i)	Philipp Marx	František Čermák Jonathan Erlich	3–6, 6–2, [10–3]
Loss	1–3	Nov 2014	Mouilleron-le-Captif, France	Hard (i)	Philipp Marx	Pierre-Hugues Herbert Nicolas Mahut	3–6, 4–6
Loss	1–4	Jul 2015	Marburg, Germany	Clay	Simon Stadler	Wesley Koolhof Matwé Middelkoop	1–6, 5–7
Win	2–4	Sep 2015	Alphen, Netherlands	Clay	Jan-Lennard Struff	Victor Hănescu Adrian Ungur	7–6(7–1), 3–6, [10–7]
Win	3–4	Mar 2018	Yokohama, Japan	Hard	Tim Pütz	Sanchai Ratiwatana Sonchat Ratiwatana	3–6, 7–5, [12–10]