# 1988 Geneva Open – Singles

Claudio Mezzadri was the defending champion, but lost in the second round this year.
Marián Vajda won the title, defeating Kent Carlsson 6–4, 6–4 in the final.

## Seeds

* Kent Carlsson (final)
* Guillermo Pérez Roldán (first round)
* Jordi Arrese (quarterfinals)
* Magnus Gustafsson (first round)
* Claudio Mezzadri (second round)
* Tomáš Šmíd (first round)
* Fernando Luna (quarterfinals)
* Bruno Orešar (second round)

## 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 | Final | Final | Final | Final |
| 1 | Kent Carlsson | 6 | 6 | | | | |
| | Horacio de la Peña | 2 | 2 | | | | |
| | Horacio de la Peña | 2 | 2 | 1 | Kent Carlsson | 4 | 4 |
| | | | | | Marián Vajda | 6 | 6 |
| | Eduardo Bengoechea | 5 | 1 | | Marián Vajda | 6 | 6 |
| | Marián Vajda | 7 | 6 | | | | |

### 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 |
| 1 | K Carlsson | 6 | 6 | | | | | | | | | | | | | | |
| Q | R Båthman | 1 | 3 | | 1 | K Carlsson | 6 | 1 | 6 | | | | | | | | |
| | D Pérez | 6 | 6 | 4 | WC | R Stadler | 2 | 6 | 0 | | | | | | | | |
| WC | R Stadler | 4 | 7 | 6 | | | | | | 1 | K Carlsson | 6 | 6 | | | | |
| WC | M Rosset | 6 | 2 | 2 | | | | | | 7 | F Luna | 1 | 2 | | | | |
| | T Meinecke | 1 | 6 | 6 | | T Meinecke | 6 | 2 | | | | | | | | | |
| WC | A Thoms | 3 | 1 | | 7 | F Luna | 7 | 6 | | | | | | | | | |
| 7 | F Luna | 6 | 6 | | | | | | | | | | | 1 | K Carlsson | 6 | 6 |
| 4 | M Gustafsson | 4 | 4 | | | | | | | | | | | | H de la Peña | 2 | 2 |
| | C Bergström | 6 | 6 | | | C Bergström | 6 | 6 | | | | | | | | | |
| Q | I Flego | 6 | 6 | 7 | Q | I Flego | 2 | 2 | | | | | | | | | |
| Q | Z Kuhárszky | 7 | 4 | 6 | | | | | | | C Bergström | 2 | 5 | | | | |
| Q | M Koevermans | 7 | 4 | 6 | | | | | | | H de la Peña | 6 | 7 | | | | |
| | H de la Peña | 6 | 6 | 7 | | H de la Peña | 7 | 6 | | | | | | | | | |
| | J Gunnarsson | 7 | 6 | | | J Gunnarsson | 6 | 2 | | | | | | | | | |
| 6 | T Šmíd | 6 | 4 | | | | | | | | | | | | | | |

### Bottom 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 |
| 5 | C Mezzadri | 6 | 6 | | | | | | | | | | | | | |
| | E Masso | 4 | 2 | | 5 | C Mezzadri | 2 | 2 | | | | | | | | |
| | E Bengoechea | 6 | 6 | | | E Bengoechea | 6 | 6 | | | | | | | | |
| | J Aguilera | 1 | 1 | | | | | | | | E Bengoechea | 6 | 6 | | | |
| | A Tous | 6 | 3 | 4 | | | | | | 3 | J Arrese | 1 | 2 | | | |
| | J Colas | 2 | 6 | 6 | | J Colas | 1 | 3 | | | | | | | | |
| | F Segărceanu | 6 | 1 | | 3 | J Arrese | 6 | 6 | | | | | | | | |
| 3 | J Arrese | 7 | 6 | | | | | | | | | | | E Bengoechea | 5 | 1 |
| 8 | B Orešar | 7 | 6 | | | | | | | | | | | M Vajda | 7 | 6 |
| | S Guy | 6 | 1 | | 8 | B Orešar | 6 | 2 | 4 | | | | | | | |
| | J Potier | 6 | 6 | 5 | | P Rebolledo | 1 | 6 | 6 | | | | | | | |
| | P Rebolledo | 2 | 7 | 7 | | | | | | | P Rebolledo | 3 | 2 | | | |
| | P Arraya | 6 | 6 | 6 | | | | | | | M Vajda | 6 | 6 | | | |
| | C Motta | 7 | 0 | 1 | | P Arraya | 6 | 3 | 3 | | | | | | | |
| | M Vajda | 6 | 6 | 6 | | M Vajda | 3 | 6 | 6 | | | | | | | |
| 2 | G Pérez Roldán | 4 | 7 | 3 | | | | | | | | | | | | |