# 1991 Canadian Open – Women's singles

Jennifer Capriati defeated Katerina Maleeva in the final, 6–2, 6–3 to win the women's singles tennis title at the 1991 Canadian Open.
Steffi Graf was the reigning champion, but chose not to participate.

## Seeds

The top eight seeds received a bye to the second round.
* Gabriela Sabatini (semifinal)
* Manuela Maleeva-Fragniere (semifinal)
* Jennifer Capriati (champion)
* Katerina Maleeva (final)
* Nathalie Tauziat (third round)
* Helena Suková (quarterfinal)
* n/a
* Amy Frazier (quarterfinal)
* Natalia Zvereva (quarterfinal)
* Laura Gildemeister (quarterfinal)
* Helen Kelesi (third round)
* Naoko Sawamatsu (third round)
* Marianne Werdel-Witmeyer (second round)
* Katia Piccolini (first round)
* Claudia Kohde-Kilsch (first round)
* Regina Rajchrtová (third 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

| Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| 1 | Gabriela Sabatini | 6 | 6 | | | | | | | | |
| 6 | Helena Suková | 3 | 2 | | | | | | | | |
| 6 | Helena Suková | 3 | 2 | 1 | Gabriela Sabatini | 4 | 3$^r$ | | | | |
| | | | | 3 | Jennifer Capriati | 6 | 2 | | | | |
| 3 | Jennifer Capriati | 6 | 6 | 3 | Jennifer Capriati | 6 | 2 | | | | |
| 9 | Natalia Zvereva | 1 | 1 | | | | | | | | |
| 9 | Natalia Zvereva | 1 | 1 | | | | | 3 | Jennifer Capriati | 6 | 6 |
| | | | | | | | | 4 | Katerina Maleeva | 2 | 3 |
| 10 | Laura Gildemeister | 2 | 2 | | | | | | | | | 4 | Katerina Maleeva | 2 | 3 |
| 4 | Katerina Maleeva | 6 | 6 | | | | | | | | |
| 4 | Katerina Maleeva | 6 | 6 | 4 | Katerina Maleeva | 6 | 1 | | | | |
| | | | | 2 | Manuela Maleeva-Fragniere | 4 | 0$^r$ | | | | |
| 8 | Amy Frazier | 2 | 6 | 2 | Manuela Maleeva-Fragniere | 4 | 0$^r$ | | | | |
| 2 | Manuela Maleeva-Fragniere | 6 | 7 | | | | | | | | |

### Top half
#### Section 1

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 1 | G Sabatini | 6 | 6 | | | | | | | | |
| Q | M Lindström | 4 | 6 | 3 | | S Farina Elia | 0 | 0 | | | | | | | | |
| | S Farina Elia | 6 | 4 | 6 | | | | | 1 | G Sabatini | 7 | 6 | | | | |
| | S Jeyaseelan | 4 | 6 | 3 | | | | | 11 | H Kelesi | 6 | 2 | | | | |
| | K Date | 6 | 4 | 6 | | K Date | 4 | 4 | | | | | | | | |
| | M Bernard | 3 | 6 | 3 | 11 | H Kelesi | 6 | 6 | | | | | | | | |
| 11 | H Kelesi | 6 | 4 | 6 | | | | | | | | | 1 | Gabriela Sabatini | 6 | 6 |
| 15 | C Kohde-Kilsch | 6 | 4 | 6 | | | | | | | | | 6 | Helena Suková | 3 | 2 |
| | L Savchenko | 4 | 6 | 7 | | L Savchenko | 1 | 1 | | | | | | | | |
| | B Cordwell | 3 | 6 | 3 | | M Endo | 6 | 6 | | | | | | | | |
| | M Endo | 6 | 4 | 6 | | | | | | M Endo | 1 | 0 | | | | |
| | J Durie | 6 | 2 | 2 | | | | | 6 | H Suková | 6 | 6 | | | | |
| | M Strandlund-Tomsvik | 3 | 6 | 6 | | M Strandlund-Tomsvik | 6 | 4 | | | | | | | | |
| | | | | | 6 | H Suková | 7 | 6 | | | | | | | | |

#### Section 2

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 3 | J Capriati | 6 | 6 | | | | | | | | | |
| | E De Lone | 6 | 6 | 6 | | E De Lone | 4 | 0 | | | | | | | | | |
| Q | H Nagano | 4 | 7 | 0 | | | | | | 3 | J Capriati | 6 | 6 | | | | |
| | S Gomer | 6 | 6 | | | | | | | | S Gomer | 2 | 3 | | | | |
| Q | S Italiano | 3 | 2 | | | S Gomer | 6 | 7 | | | | | | | | | |
| | A Keller | 2 | 7 | 6 | 13 | M Werdel-Witmeyer | 3 | 5 | | | | | | | | | |
| 13 | M Werdel-Witmeyer | 6 | 6 | 7 | | | | | | | | | | 3 | Jennifer Capriati | 6 | 6 |
| 9 | N Zvereva | 6 | 6 | | | | | | | | | | | 9 | Natalia Zvereva | 1 | 1 |
| | Y Segal | 1 | 3 | | 9 | N Zvereva | 7 | 1 | 7 | | | | | | | | |
| | S Dopfer | 6 | 0 | 1 | | P Hy-Boulais | 5 | 6 | 5 | | | | | | | | |
| | P Hy-Boulais | 1 | 6 | 6 | | | | | | 9 | N Zvereva | 7 | 6 | | | | |
| Q | C Benjamin | 1 | 2 | | | | | | | Q | J Watanabe | 6 | 0 | | | | |
| Q | J Watanabe | 6 | 6 | | Q | J Watanabe | 6 | 6 | | | | | | | | | |
| | | | | | | J Salmon | 0 | 1 | | | | | | | | | |

### Bottom half
#### Section 1

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 5 | N Tauziat | 6 | 6 | | | | | | | | | | |
| | A Minter | 7 | 7 | | | A Minter | 1 | 0 | | | | | | | | | | |
| | R Baranski | 5 | 5 | | | | | | | 5 | N Tauziat | 3 | 6 | 4 | | | | |
| | L Field | 4 | 2 | | | | | | | 10 | L Gildemeister | 6 | 4 | 6 | | | | |
| | K Rinaldi | 6 | 6 | | | K Rinaldi | 2 | 6 | | | | | | | | | | |
| | A Henricksson | 5 | 7 | 4 | 10 | L Gildemeister | 6 | 7 | | | | | | | | | | |
| 10 | L Gildemeister | 7 | 5 | 6 | | | | | | | | | | | 10 | Laura Gildemeister | 2 | 2 |
| 12 | N Sawamatsu | 6 | 6 | | | | | | | | | | | | 4 | Katerina Maleeva | 6 | 6 |
| | C Dahlman | 2 | 4 | | 12 | N Sawamatsu | 6 | 5 | 6 | | | | | | | | | |
| | P Thorén | 6 | 6 | | | P Thorén | 4 | 7 | 2 | | | | | | | | | |
| Q | S Loosemore | 2 | 3 | | | | | | | 12 | N Sawamatsu | 1 | 3 | | | | | |
| | A Leand | 1 | $^r$ | | | | | | | 4 | K Maleeva | 6 | 6 | | | | | |
| | M Maleeva | 6 | | | | M Maleeva | 3 | 3 | | | | | | | | | | |
| | | | | | 4 | K Maleeva | 6 | 6 | | | | | | | | | | |

#### Section 2

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 8 | A Frazier | 7 | 6 | | | | | | | | | |
| Q | M Drake | 1 | 0 | | | N Bradtke | 5 | 3 | | | | | | | | | |
| | N Bradtke | 6 | 6 | | | | | | 8 | A Frazier | 6 | 1 | 6 | | | | |
| | E Smylie | 0 | 1 | | | | | | | D Graham | 3 | 6 | 1 | | | | |
| | D Graham | 6 | 6 | | | D Graham | 6 | 6 | | | | | | | | | |
| | J Emmons | 1 | 6 | 6 | | J Emmons | 2 | 3 | | | | | | | | | |
| 14 | K Piccolini | 6 | 2 | 3 | | | | | | | | | | 8 | Amy Frazier | 2 | 6 |
| 16 | R Rajchrtová | 6 | 7 | | | | | | | | | | | 2 | Manuela Maleeva-Fragniere | 6 | 7 |
| | E Pfaff | 2 | 5 | | 16 | R Rajchrtová | 6 | 6 | | | | | | | | | |
| | A Kijimuta | 6 | 6 | 1 | | R Collins | 3 | 4 | | | | | | | | | |
| | R Collins | 1 | 7 | 6 | | | | | 16 | R Rajchrtová | 1 | 2 | | | | | |
| | R Hiraki | 7 | 6 | | | | | | 2 | M Maleeva-Fragniere | 6 | 6 | | | | | |
| Q | S Amiach | 5 | 3 | | | R Hiraki | 5 | 0 | | | | | | | | | |
| | | | | | 2 | M Maleeva-Fragniere | 7 | 6 | | | | | | | | | |