| Country (sports) |  West Germany |
|---|---|
| Born | (1964-05-02)2 May 1964 (age 60) Hamburg, West Germany |
| Height | 1.85 m (6 ft 1 in) |
| Plays | Right-handed |
| Singles | |
| Career record | 60–79 |
| Career titles | 1 |
| Highest ranking | No. 58 (19 October 1987) |
| Grand Slam singles results | |
| Australian Open | 2R (1985) |
| French Open | 4R (1987) |
| Wimbledon | 2R (1986, 1987, 1988) |
| US Open | 2R (1986, 1987, 1988) |
| Doubles | |
| Career record | 45–67 |
| Career titles | 3 |
| Highest ranking | No. 67 (24 April 1989) |
| Grand Slam doubles results | |
| Australian Open | 2R (1990) |
| French Open | 3R (1988) |
| Wimbledon | 2R (1988) |
Ricki Osterthun (born 2 May 1964) is a formertennis player from West Germany, who won one single title (1985,Hilversum) during his professional career.
The right-hander reached his highest singlesATP-ranking on 19 October 1987, when Osterhun became the number 58 of the world.
| Result | W–L | Date | Tournament | Surface | Opponent | Score |
|---|---|---|---|---|---|---|
| Win | 1–0 | Jul 1985 | Hilversum, Netherlands | Clay |  Kent Carlsson | 4–6, 4–6, 6–2, 6–4, 6–3 |
| Loss | 1–1 | May 1986 | Munich, West Germany | Clay |  Emilio Sánchez | 6–1, 6–3 |
| Loss | 1–2 | Oct 1987 | Toulouse, France | Carpet (i) |  Tim Mayotte | 6–2, 5–7, 6–4 |
| Result | W–L | Date | Tournament | Surface | Partner | Opponents | Score |
|---|---|---|---|---|---|---|---|
| Win | 1–0 | Jun 1987 | Athens, Greece | Clay | Tore Meinecke |  Jaroslav Navrátil Tom Nijssen | 6–2, 3–6, 6–2 |
| Win | 2–0 | Oct 1988 | Toulouse, France | Hard (i) | Tom Nijssen |  Mansour Bahrami Guy Forget | 6–3, 6–4 |
| Win | 3–0 | Apr 1989 | Nice, France | Clay | Udo Riglewski |  Heinz Günthardt Balázs Taróczy | 7–6, 6–7, 6–1 |
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