# 1991 Geneva European Open – Singles

Barbara Paulus was the defending champion, but did not compete this year.
Manuela Maleeva-Fragnière won the title by defeating Helen Kelesi 6–3, 3–6, 6–3 in the final.

## Seeds

The first four seeds received a bye into the second round.
* Conchita Martínez (semifinals)
* Manuela Maleeva-Fragnière (champion)
* (n/a)
* Helen Kelesi (final)
* Emanuela Zardo (second round)
* Marianne Werdel (second round)
* Rosalyn Fairbank-Nideffer (first round)
* Manuela Maleeva (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 | Final |
| 1 | Conchita Martínez | 4 | 7$^7$ | 2 | | | | | |
| 4 | Helen Kelesi | 6 | 6$^5$ | 6 | | | | | |
| 4 | Helen Kelesi | 6 | 6$^5$ | 6 | 4 | Helen Kelesi | 3 | 6 | 3 |
| | | | | | 2 | Manuela Maleeva-Fragnière | 6 | 3 | 6 |
| LL | Tami Whitlinger | 1 | 3 | | 2 | Manuela Maleeva-Fragnière | 6 | 3 | 6 |
| 2 | Manuela Maleeva-Fragnière | 6 | 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| | | | | | 1 | C Martínez | 6 | 6 | | | | | | | | | | | |
| | C Dahlman | 4 | 3 | | | L Ferrando | 0 | 2 | | | | | | | | | | | |
| | L Ferrando | 6 | 6 | | | | | | | 1 | C Martínez | 6 | 6 | | | | | | |
| | E Reinach | 4 | 6 | 6$^2$ | | | | | | | C Fauche | 3 | 3 | | | | | | |
| | C Fauche | 6 | 3 | 7$^7$ | | C Fauche | 6 | 7 | | | | | | | | | | | |
| | S Hack | 6 | 6 | | | S Hack | 2 | 5 | | | | | | | | | | | |
| 7 | R Fairbank-Nideffer | 1 | 1 | | | | | | | | | | | | 1 | C Martínez | 4 | 7$^7$ | 2 |
| | | | | | | | | | | | | | | | 4 | H Kelesi | 6 | 6$^5$ | 6 |
| | | | | | 4 | H Kelesi | 7 | 6 | | | | | | | | | | | |
| | C Barthos | 6 | 2 | 1 | | C Mothes | 5 | 3 | | | | | | | | | | | |
| | C Mothes | 4 | 6 | 6 | | | | | | 4 | H Kelesi | 6$^0$ | 7 | 6 | | | | | |
| | L Field | 3 | 5 | | | | | | | | G Helgeson | 7$^7$ | 5 | 1 | | | | | |
| | G Helgeson | 6 | 7 | | | G Helgeson | 4 | 6 | 6 | | | | | | | | | | |
| Q | A Coetzer | 3 | 0 | | 5 | E Zardo | 6 | 2 | 4 | | | | | | | | | | |
| 5 | E Zardo | 6 | 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 | Semifinals | Semifinals | Semifinals | Semifinals |
| 6 | M Werdel | 4 | 6 | 6 | | | | | | | | | | | | | |
| | C Caverzasio | 6 | 3 | 3 | 6 | M Werdel | 6 | 2 | 4 | | | | | | | | |
| | C Porwik | 5 | 2 | | | M Kidowaki | 1 | 6 | 6 | | | | | | | | |
| | M Kidowaki | 7 | 6 | | | | | | | | M Kidowaki | 4 | 6$^4$ | | | | |
| | K Piccolini | 6 | 6 | | | | | | | LL | T Whitlinger | 6 | 7$^7$ | | | | |
| Q | N Pratt | 4 | 4 | | | K Piccolini | 3 | 2 | | | | | | | | | |
| | | | | | LL | T Whitlinger | 6 | 6 | | | | | | | | | |
| | | | | | | | | | | | | | | LL | T Whitlinger | 1 | 3 |
| 8 | M Maleeva | 6 | 3 | 7$^7$ | | | | | | | | | | 2 | M Maleeva-Fragnière | 6 | 6 |
| | N Provis | 3 | 6 | 6$^5$ | 8 | M Maleeva | 4 | 3 | | | | | | | | | |
| | S Giusto | 6$^0$ | 3 | | Q | S Stafford | 6 | 6 | | | | | | | | | |
| Q | S Stafford | 7$^7$ | 6 | | | | | | | Q | S Stafford | 4 | 3 | | | | |
| Q | N Baudone | 4 | 6 | 5 | | | | | | 2 | M Maleeva-Fragnière | 6 | 6 | | | | |
| | K Habšudová | 6 | 4 | 7 | | K Habšudová | 1 | 6 | 1 | | | | | | | | |
| | | | | | 2 | M Maleeva-Fragnière | 6 | 2 | 6 | | | | | | | | |