# 1985 Geneva Open – Singles

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.

## Seeds

* 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)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| 1 | Mats Wilander | 3 | 6 | 6 | | | | |
| 6 | Henri Leconte | 6 | 3 | 1 | | | | |
| 6 | Henri Leconte | 6 | 3 | 1 | 1 | Mats Wilander | 4 | 4 |
| | | | | | 3 | Tomáš Šmíd | 6 | 6 |
| 3 | Tomáš Šmíd | 7 | 6 | | 3 | Tomáš Šmíd | 6 | 6 |
| | Juan Aguilera | 5 | 4 | | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | 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 | | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | 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 | | | | | | | | | | | | | |