| Singles | |
|---|---|
| 1985 Geneva Open | |
| Champion |  Tomáš Šmíd |
| Runner-up |  Mats Wilander |
| Score | 6–4, 6–4 |
| Draw | 32 |
| Seeds | 8 |
Aaron Krickstein was the defending champion but lost in the second round this year.
Tomáš Šmíd won the title, defeating Mats Wilander 6–4, 6–4 in the final.
Mats Wilander (final) Joakim Nyström (second round, withdrew) Tomáš Šmíd (champion)
Martín Jaite (first round)
Aaron Krickstein (second round)
Henri Leconte (semifinals)
Heinz Günthardt (second round) Jakob Hlasek (quarterfinals)| Semifinals | Final | ||||||||||||
| 1 | Mats Wilander | 3 | 6 | 6 | |||||||||
| 6 | Henri Leconte | 6 | 3 | 1 | |||||||||
| 1 | Mats Wilander | 4 | 4 | ||||||||||
| 3 | Tomáš Šmíd | 6 | 6 | ||||||||||
| 3 | Tomáš Šmíd | 7 | 6 | ||||||||||
 Juan Aguilera | 5 | 4 | |||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | M Wilander | 4 | 6 | 6 | |||||||||||||||||||||||
| A Ganzábal | 6 | 2 | 2 | 1 | M Wilander | 6 | 6 | ||||||||||||||||||||
 D Keretić | 1 | 6 | 6 | Q |  A Zverev | 2 | 3 | ||||||||||||||||||||
| Q | A Zverev | 6 | 3 | 7 | 1 | M Wilander | 7 | 6 | |||||||||||||||||||
| P Složil | 6 | 6 | 8 | J Hlasek | 5 | 4 | |||||||||||||||||||||
| Q | A Võsand | 4 | 4 | P Složil | 6 | 7 | 4 | ||||||||||||||||||||
| WC | Christoph Meyer | 2 | 6 | 8 | J Hlasek | 7 | 6 | 6 | |||||||||||||||||||
| 8 | J Hlasek | 6 | 7 | 1 | M Wilander | 3 | 6 | 6 | |||||||||||||||||||
| 4 | M Jaite | 7 | 4 | 5 | 6 | H Leconte | 6 | 3 | 1 | ||||||||||||||||||
| M Vajda | 6 | 6 | 7 | M Vajda | 1 | 6 | 7 | ||||||||||||||||||||
| K Carlsson | 6 | 6 | K Carlsson | 6 | 2 | 5 | |||||||||||||||||||||
| G Forget | 4 | 4 | M Vajda | 5 | 1 | ||||||||||||||||||||||
| Q | A Chesnokov | 6 | 6 | 6 | H Leconte | 7 | 6 | ||||||||||||||||||||
 P Arraya | 0 | 4 | Q | A Chesnokov | 2 | 6 | 2 | ||||||||||||||||||||
| S Casal | 3 | 3 | 6 | H Leconte | 6 | 4 | 6 | ||||||||||||||||||||
| 6 | H Leconte | 6 | 6 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 5 | A Krickstein | 6 | 6 | ||||||||||||||||||||||||
| WC | Thierry Grin | 1 | 3 | 5 | A Krickstein | 4 | 4 | ||||||||||||||||||||
| J Lópe-Maeso | 2 | 1 | R Argüello | 6 | 6 | ||||||||||||||||||||||
| R Argüello | 6 | 6 | R Argüello | 2 | 2 | ||||||||||||||||||||||
| M Ingaramo | 6 | 6 | 3 | T Šmíd | 6 | 6 | |||||||||||||||||||||
| H de la Peña | 3 | 3 | M Ingaramo | 1 | 3 | ||||||||||||||||||||||
| J Navrátil | 6 | 3 | 2 | 3 | T Šmíd | 6 | 6 | ||||||||||||||||||||
| 3 | T Šmíd | 2 | 6 | 6 | 3 | T Šmíd | 7 | 6 | |||||||||||||||||||
| 7 | H Günthardt | 6 | 6 | 6 | J Aguilera | 5 | 4 | ||||||||||||||||||||
| B Scanlon | 2 | 7 | 1 | 7 | H Günthardt | 4 | 3 | ||||||||||||||||||||
| Q | JA Rodríguez | 6 | 3 | 0 | WC |  L Lavalle | 6 | 6 | |||||||||||||||||||
| WC | L Lavalle | 4 | 6 | 6 | WC | L Lavalle | 5 | 1 | |||||||||||||||||||
 B Taróczy | 6 | 5 | 2 | J Aguilera | 7 | 6 | |||||||||||||||||||||
| J Aguilera | 2 | 7 | 6 | J Aguilera | w/o | ||||||||||||||||||||||
| E Bengoechea | 4 | 3 | 2 | J Nyström | |||||||||||||||||||||||
| 2 | J Nyström | 6 | 6 | ||||||||||||||||||||||||
Michael Chang defeated Stefan Edberg in the final, 6–1, 3–6, 4–6, 6–4, 6–2, to win the men's singles tennis title at the 1989 French Open. Chang became the youngest-ever major men's singles champion, winning the final at the age of 17 years, 3 months and 20 days and the first player of Asian descent to win the major. En route to the title, he defeated the world No. 1 and three-time champion Ivan Lendl, which is remembered as one of the most significant matches in French Open history.
Boris Becker defeated Kevin Curren in the final, 6–3, 6–7(4–7), 7–6(7–3), 6–4 to win the gentlemen's singles tennis title at the 1985 Wimbledon Championships. He became the first unseeded player and the first German to win the Wimbledon singles title, as well as the youngest ever male major singles champion at 17 years, 7 months and 15 days of age. This latter record would eventually be broken by Michael Chang at the 1989 French Open.
Ivan Lendl defeated Miloslav Mečíř in the final, 6–2, 6–2, 6–2 to win the men's singles tennis title at the 1989 Australian Open.
Mats Wilander defeated Ivan Lendl in the final, 6–1, 6–4, 6–4 to win the men's singles tennis title at the 1983 Australian Open.
John McEnroe defeated Ivan Lendl in the final, 6–3, 6–4, 6–1 to win the men's singles tennis title at the 1984 US Open. It was his fourth US Open singles title and seventh and last major singles title overall. It was Lendl's third consecutive runner-up finish at the US Open.
Tim Mayotte won in the final 4–6, 4–6, 6–3, 6–2, 6–4 against Scott Davis.
Tim Mayotte was the defending champion but did not compete that year.
Mats Wilander was the defending champion but lost in the semifinals to Stefan Edberg.
John McEnroe was the defending champion, but did not participate this year.
Mats Wilander was the defending champion, but lost in the final this year.
Henri Leconte was the defending champion, but lost in the quarterfinals this year.
Björn Borg was the defending champion, but did not participate this year.
Mats Wilander was the defending champion.
Mats Wilander was the defending champion but lost in the quarterfinals this year.
Mats Wilander was the defending champion, but lost to Claudio Pistolesi in the third round.
Mats Wilander was the defending champion, but lost in the third round to Ronald Agénor.
Guy Forget and Yannick Noah were the defending champions and successfully defended their title, by defeating Miloslav Mečíř and Tomáš Šmíd 6–2, 6–7, 6–3 in the final.
Andrés Gómez was the defending champion, but lost in the first round to Jan Gunnarsson.
Ken Flach and Robert Seguso were the defending champions, but lost in the final to Anders Järryd and Mats Wilander. The score was 4–6, 6–3, 6–2.
Mats Wilander successfully defended his title, by defeating Anders Järryd 7–6, 6–3 in the final.