# 1990 Open Clarins – Singles

Sandra Cecchini was the defending champion, but lost in the semifinals to Patricia Tarabini.
Conchita Martínez won the title by defeating Tarabini 7–5, 6–3 in the final.

## Seeds

* Conchita Martínez (champion)
* Sandra Cecchini (semifinals)
* Isabel Cueto (first round)
* Julie Halard (semifinals)
* Rachel McQuillan (quarterfinals)
* Cathy Caverzasio (first round, retired)
* Regina Rajchrtová (quarterfinals)
* Laura Golarsa (withdrew)

## 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 | Conchita Martínez | 6 | 6 | | | | |
| 4 | Julie Halard | 1 | 2 | | | | |
| 4 | Julie Halard | 1 | 2 | 1 | Conchita Martínez | 7 | 6 |
| | | | | | Patricia Tarabini | 5 | 3 |
| | Patricia Tarabini | 6 | 7 | | Patricia Tarabini | 5 | 3 |
| 2 | Sandra Cecchini | 4 | 5 | | | | |

### 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | C Martínez | 6 | 6 | | | | | | | | | | | | | | | |
| | K Quentrec | 1 | 3 | | 1 | C Martínez | 6 | 6 | | | | | | | | | | |
| | S Niox-Château | 6 | 3 | 1 | | N Herreman | 1 | 3 | | | | | | | | | | |
| | N Herreman | 2 | 6 | 6 | | | | | | 1 | C Martínez | 6 | 6 | | | | | |
| | E Pampoulova | 7$^7$ | 6 | | | | | | | 5 | R McQuillan | 4 | 3 | | | | | |
| Q | K Nowak | 6$^4$ | 4 | | | E Pampoulova | 2 | 4 | | | | | | | | | | |
| | F Bonsignori | 1 | 6 | 3 | 5 | R McQuillan | 6 | 6 | | | | | | | | | | |
| 5 | R McQuillan | 6 | 3 | 6 | | | | | | | | | | | 1 | C Martínez | 6 | 6 |
| 4 | J Halard | 6 | 6 | | | | | | | | | | | | 4 | J Halard | 1 | 2 |
| | L Lapi | 4 | 2 | | 4 | J Halard | 4 | 6 | 6 | | | | | | | | | |
| | A Kanellopoulou | 7 | 6 | | | A Kanellopoulou | 6 | 3 | 3 | | | | | | | | | |
| Q | O Graveraux | 5 | 1 | | | | | | | 4 | J Halard | 6$^2$ | 6 | 6 | | | | |
| Q | A Fusai | 6$^6$ | 2 | | | | | | | Q | D Graham | 7$^7$ | 2 | 3 | | | | |
| | S Hack | 7$^8$ | 6 | | | S Hack | 3 | 6 | 4 | | | | | | | | | |
| Q | D Graham | 6 | 4 | 6 | Q | D Graham | 6 | 3 | 6 | | | | | | | | | |
| LL | E Derly | 4 | 6 | 3 | | | | | | | | | | | | | | |

### 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 6 | C Caverzasio | 4 | 3$^r$ | | | | | | | | | | | | | | | |
| | F Romano | 6 | 2 | | | F Romano | 4 | 4 | | | | | | | | | | |
| | E Zardo | 4 | 0 | | | P Tarabini | 6 | 6 | | | | | | | | | | |
| | P Tarabini | 6 | 6 | | | | | | | | P Tarabini | 6 | 6 | | | | | |
| | P Langrová | 5 | 6 | 7 | | | | | | | P Langrová | 4 | 3 | | | | | |
| WC | S Testud | 7 | 4 | 5 | | P Langrová | 6 | 4 | 6 | | | | | | | | | |
| | L Garrone | 4 | 6 | 6 | | L Garrone | 4 | 6 | 1 | | | | | | | | | |
| 3 | I Cueto | 6 | 2 | 3 | | | | | | | | | | | | P Tarabini | 6 | 7 |
| 7 | R Rajchrtová | 6 | 6 | | | | | | | | | | | | 2 | S Cecchini | 4 | 5 |
| | C Dahlman | 2 | 1 | | 7 | R Rajchrtová | 6 | 6 | | | | | | | | | | |
| LL | L Corsato | 2 | 6 | 7 | LL | L Corsato | 2 | 0 | | | | | | | | | | |
| | H Kadzidroga | 6 | 1 | 5 | | | | | | 7 | R Rajchrtová | 6 | 1 | 4 | | | | |
| WC | A Dechaume | 7 | 6 | | | | | | | 2 | S Cecchini | 3 | 6 | 6 | | | | |
| | J Pospíšilová | 5 | 3 | | WC | A Dechaume | 4 | 5 | | | | | | | | | | |
| | S Wasserman | 7 | 4 | 5 | 2 | S Cecchini | 6 | 7 | | | | | | | | | | |
| 2 | S Cecchini | 5 | 6 | 7 | | | | | | | | | | | | | | |