Juniors

As a junior, Jonsson reached as high as No. 19 in the world singles rankings in 1995. His best result was reaching the semifinals at the 1995 Junior Italian Open where he lost to the eventual champion, Mariano Zabaleta.^[2]

Pro career

Jonsson made his ATP main draw singles debut, as a qualifier, at the 1986 Swedish Open where he lost in the first round to Carlos Costa. He subsequently participated mainly on the ITF Futures circuit and the ATP Challenger Tour. In September 1998, he reached his first final on the Challenger tour, when he lost in the final of the Budva Challenger against Tomas Behrend. In October 1998, he won the Samarkand Challenger by beating Oleg Ogorodov in the final.

In Grand Slam tennis, his best performance was at the 1999 US Open, when he reached the third round and beat world number 16, Nicolás Lapentti in the second round, before losing to Slava Doseděl.^[1]

Singles: 7 (3–4)

Legend ATP Challenger (1–3) ITF Futures (2–1) Result W–L    Date    Tournament Tier Surface Opponent Score Loss 0–1 Mar 1998 Greece F3, Chalkida Futures Hard Jan-Ralph Brandt 2–6, 1–6 Loss 0–2 Sep 1998 Budva, Yugoslavia Challenger Clay Tomas Behrend 6–3, 3–6, 2–6 Win 1–2 Sep 1998 Sweden F3, Gothenburg Futures Hard Nicklas Timfjord 6–3, 6–4 Win 2–2 Oct 1998 Samarkand, Uzbekistan Challenger Clay Oleg Ogorodov 7–6, 6–3 Loss 2–3 Aug 1999 Poznan, Poland Challenger Clay Galo Blanco 4–6, 2–6 Win 3–3 Apr 2001 USA F8, Little Rock, Arkansas Futures Hard Martin Verkerk 6–3, 6–4 Loss 3–4 May 2001 Fergana, Uzbekistan Challenger Hard Ivo Heuberger 6–4, 5–7, 2–6 References 1 2 ATP World Tour: Fredrik Jonsson ↑ "Fredrik Jonsson – Juniors". www.itftennis.com. Retrieved 2020-10-30.