# 1991 OTB International Open – Women's singles

Anke Huber was the defending champion, but lost in the quarterfinals to Alexia Dechaume.
Brenda Schultz won the title by defeating Dechaume 7–6$^{(7–5)}$, 6–2 in the final.

## Seeds

* Anke Huber (quarterfinals)
* Julie Halard (second round)
* Marianne Werdel (semifinals)
* Rachel McQuillan (quarterfinals)
* Naoko Sawamatsu (quarterfinals)
* Manon Bollegraf (second round)
* Brenda Schultz (champion)
* Elena Brioukhovets (first 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 |
| | Alexia Dechaume | 6 | 6 | | | | | |
| 3 | Marianne Werdel | 1 | 3 | | | | | |
| 3 | Marianne Werdel | 1 | 3 | | | Alexia Dechaume | 6$^5$ | 2 |
| | | | | | 7 | Brenda Schultz | 7$^7$ | 6 |
| 7 | Brenda Schultz | 5 | 7 | 6 | 7 | Brenda Schultz | 7$^7$ | 6 |
| | Nicole Provis | 7 | 5 | 3 | | | | |

### 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 | A Huber | 6 | 7 | | | | | | | | | | | | | | |
| | B Fulco | 0 | 5 | | 1 | A Huber | 6 | 7 | | | | | | | | | |
| Q | S Testud | 4 | 6 | 3 | WC | L Davenport | 1 | 5 | | | | | | | | | |
| WC | L Davenport | 6 | 3 | 6 | | | | | | 1 | A Huber | 3 | 4 | | | | |
| | K Kschwendt | 7$^8$ | 6 | | | | | | | | A Dechaume | 6 | 6 | | | | |
| | A Grossman | 6$^6$ | 4 | | | K Kschwendt | 4 | 4 | | | | | | | | | |
| | A Dechaume | 6 | 6 | | | A Dechaume | 6 | 6 | | | | | | | | | |
| 8 | E Brioukhovets | 3 | 4 | | | | | | | | | | | | A Dechaume | 6 | 6 |
| 3 | M Werdel | 4 | 6 | 7$^7$ | | | | | | | | | | 3 | M Werdel | 1 | 3 |
| | M Paz | 6 | 2 | 6$^3$ | 3 | M Werdel | 6 | 4 | 7 | | | | | | | | |
| | A Coetzer | 2 | 3 | | | P Paradis-Mangon | 2 | 6 | 5 | | | | | | | | |
| | P Paradis-Mangon | 6 | 6 | | | | | | | 3 | M Werdel | 6 | 6 | | | | |
| | B Rittner | 6 | 6 | | | | | | | 5 | N Sawamatsu | 3 | 2 | | | | |
| WC | S Birch | 0 | 1 | | | B Rittner | 2 | 2 | | | | | | | | | |
| Q | S Martin | 3 | 2 | | 5 | N Sawamatsu | 6 | 6 | | | | | | | | | |
| 5 | N Sawamatsu | 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 7 | B Schultz | 6 | 6 | | | | | | | | | | | | | | | | |
| Q | T Whitlinger | 1 | 1 | | 7 | B Schultz | 6 | 6 | | | | | | | | | | | |
| | W Probst | 7 | 3 | 6 | | W Probst | 3 | 2 | | | | | | | | | | | |
| | D Faber | 5 | 6 | 4 | | | | | | 7 | B Schultz | 4 | 6 | 6 | | | | | |
| | E Švíglerová | 6 | 6 | | | | | | | 4 | R McQuillan | 6 | 4 | 2 | | | | | |
| Q | C Toleafoa | 1 | 0 | | | E Švíglerová | 6$^3$ | 1 | | | | | | | | | | | |
| | K Godridge | 3 | 2 | | 4 | R McQuillan | 7$^7$ | 6 | | | | | | | | | | | |
| 4 | R McQuillan | 6 | 6 | | | | | | | | | | | | 7 | B Schultz | 5 | 7 | 6 |
| 6 | M Bollegraf | 2 | 6 | 7$^7$ | | | | | | | | | | | | N Provis | 7 | 5 | 3 |
| | Z Málková | 6 | 1 | 6$^4$ | 6 | M Bollegraf | 2 | 3 | | | | | | | | | | | |
| | A Temesvári | 4 | 6 | 5 | | F Labat | 6 | 6 | | | | | | | | | | | |
| | F Labat | 6 | 4 | 7 | | | | | | | F Labat | 5 | 3 | | | | | | |
| | H Cioffi | 6 | 1 | 3 | | | | | | | N Provis | 7 | 6 | | | | | | |
| | N Provis | 4 | 6 | 6 | | N Provis | 5 | 6 | 6 | | | | | | | | | | |
| | C Porwik | 6 | 4 | 2 | 2 | J Halard | 7 | 2 | 2 | | | | | | | | | | |
| 2 | J Halard | 1 | 6 | 6 | | | | | | | | | | | | | | | |