# 1991 Open Clarins – Singles

Conchita Martínez successfully defended her title by defeating Inés Gorrochategui 6–0, 6–3 in the final.

## Seeds

* Conchita Martínez (champion)
* Sandra Cecchini (first round)
* Radka Zrubáková (second round)
* Julie Halard (semifinals)
* Rachel McQuillan (first round)
* Emanuela Zardo (quarterfinals)
* Regina Rajchrtová (first round)
* Federica Bonsignori (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 | Semifinals | Final | Final | Final | Final |
| 1 | Conchita Martínez | 6 | 2 | 7 | | | | |
| 4 | Julie Halard | 4 | 6 | 5 | | | | |
| 4 | Julie Halard | 4 | 6 | 5 | 1 | Conchita Martínez | 6 | 6 |
| | | | | | | Inés Gorrochategui | 0 | 3 |
| | Mercedes Paz | 2 | 3 | | | Inés Gorrochategui | 0 | 3 |
| | Inés Gorrochategui | 6 | 6 | | | | | |

### Top 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 | Semifinals |
| 1 | C Martínez | 6 | 6 | | | | | | | | | | | | | | |
| | P Tarabini | 1 | 3 | | 1 | C Martínez | 6 | 6 | | | | | | | | | |
| | S Hack | 6 | 6 | | | S Hack | 0 | 3 | | | | | | | | | |
| | M Pérez Roldán | 0 | 1 | | | | | | 1 | C Martínez | 6 | 6 | | | | | |
| Q | S Frankl | 6 | 6 | | | | | | 6 | E Zardo | 4 | 2 | | | | | |
| Q | V Paquet | 2 | 0 | | Q | S Frankl | 3 | 2 | | | | | | | | | |
| | M Strandlund | 2 | 4 | | 6 | E Zardo | 6 | 6 | | | | | | | | | |
| 6 | E Zardo | 6 | 6 | | | | | | | | | | 1 | C Martínez | 6 | 2 | 7 |
| 4 | J Halard | 6 | 0 | 6 | | | | | | | | | 4 | J Halard | 4 | 6 | 5 |
| | A Dechaume | 4 | 6 | 2 | 4 | J Halard | 7$^8$ | 6 | | | | | | | | | |
| LL | N Housset | 1 | 6$^4$ | | | L Garrone | 6$^6$ | 2 | | | | | | | | | |
| | L Garrone | 6 | 7$^7$ | | | | | | 4 | J Halard | 6 | 6 | | | | | |
| | K Kschwendt | 6 | 3 | 4 | | | | | | V Martinek | 4 | 3 | | | | | |
| | V Martinek | 0 | 6 | 6 | | V Martinek | 7$^7$ | 6 | | | | | | | | | |
| Q | D Szabová | 3 | 7$^7$ | 0 | 8 | F Bonsignori | 6$^4$ | 3 | | | | | | | | | |
| 8 | F Bonsignori | 6 | 6$^1$ | 6 | | | | | | | | | | | | | |

### 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 |
| 7 | R Rajchrtová | 4 | 6 | 1 | | | | | | | | | | | | | |
| | S Testud | 6 | 4 | 6 | | S Testud | 2 | 3 | | | | | | | | | |
| | N Jagerman | 1 | 6 | 6 | | N Jagerman | 6 | 6 | | | | | | | | | |
| | B Fulco | 6 | 3 | 2 | | | | | | | N Jagerman | 6 | 5 | 3 | | | |
| | M Paz | 6 | 6 | | | | | | | | M Paz | 1 | 7 | 6 | | | |
| | P Langrová | 2 | 4 | | | M Paz | 7$^7$ | 6 | | | | | | | | | |
| | C Caverzasio | 5 | 2 | | 3 | R Zrubáková | 6$^4$ | 2 | | | | | | | | | |
| 3 | R Zrubáková | 7 | 6 | | | | | | | | | | | | M Paz | 2 | 3 |
| 5 | R McQuillan | 4 | 6 | 4 | | | | | | | | | | | I Gorrochategui | 6 | 6 |
| LL | S Meier | 6 | 3 | 6 | LL | S Meier | 4 | 6 | 7 | | | | | | | | |
| LL | E Pampoulova-Wagner | 1 | 4 | | | K Godridge | 6 | 3 | 5 | | | | | | | | |
| | K Godridge | 6 | 6 | | | | | | | LL | S Meier | 3 | 5 | | | | |
| | N van Lottum | 4 | 6$^2$ | | | | | | | | I Gorrochategui | 6 | 7 | | | | |
| Q | S Niox-Château | 6 | 7$^7$ | | Q | S Niox-Château | 6 | 4 | 1 | | | | | | | | |
| | I Gorrochategui | 6 | 6 | | | I Gorrochategui | 2 | 6 | 6 | | | | | | | | |
| 2 | S Cecchini | 4 | 1 | | | | | | | | | | | | | | |