# 1990 Canadian Open – Women's singles

Steffi Graf defeated Katerina Maleeva in the final, 6–1, 6–7, 6–3 to win the women's singles tennis title at the 1990 Canadian Open.
Martina Navratilova was the reigning champion, but chose not to participate.

## Seeds

The top eight seeds received a bye to the second round.
* Steffi Graf (champion)
* Gabriela Sabatini (semifinal)
* Katerina Maleeva (final)
* Manuela Maleeva-Fragniere (quarterfinal)
* Natalia Zvereva (quarterfinal)
* Jennifer Capriati (quarterfinal)
* Nathalie Tauziat (semifinal)
* Barbara Paulus (third round)
* Helen Kelesi (third round)
* Raffaella Reggi (third round)
* Claudia Porwik (second round)
* Manon Bollegraf (second round)
* Larisa Savchenko (second round)
* Julie Halard (first round)
* Lori McNeil (third round)
* Regina Rajchrtová (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

| Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| 1 | Steffi Graf | 6 | 6 | | | | | | | | | | |
| 5 | Natalia Zvereva | 0 | 4 | | | | | | | | | | |
| 5 | Natalia Zvereva | 0 | 4 | | 1 | Steffi Graf | 6 | 6 | | | | | |
| | | | | | 7 | Nathalie Tauziat | 2 | 2 | | | | | |
| 4 | Manuela Maleeva-Fragniere | 3 | 2 | | 7 | Nathalie Tauziat | 2 | 2 | | | | | |
| 7 | Nathalie Tauziat | 6 | 6 | | | | | | | | | | |
| 7 | Nathalie Tauziat | 6 | 6 | | | | | | 1 | Steffi Graf | 6 | 6 | 6 |
| | | | | | | | | | 3 | Katerina Maleeva | 1 | 7 | 3 |
| | Naoko Sawamatsu | 7 | 2 | 4 | | | | | | | | | | 3 | Katerina Maleeva | 1 | 7 | 3 |
| 3 | Katerina Maleeva | 6 | 6 | 6 | | | | | | | | | |
| 3 | Katerina Maleeva | 6 | 6 | 6 | 3 | Katerina Maleeva | 6 | 6 | | | | | |
| | | | | | 2 | Gabriela Sabatini | 3 | 4 | | | | | |
| 6 | Jennifer Capriati | 6 | 1 | 4 | 2 | Gabriela Sabatini | 3 | 4 | | | | | |
| 2 | Gabriela Sabatini | 3 | 6 | 6 | | | | | | | | | |

### 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 | S Graf | 6 | 6 | | | | | | | | |
| LL | L Spadea | 1 | 1 | | | M Javer | 1 | 2 | | | | | | | | |
| | M Javer | 6 | 6 | | | | | | 1 | S Graf | 7 | 6 | | | | |
| LL | R Baranski | 6 | 6 | | | | | | 15 | L McNeil | 5 | 3 | | | | |
| | B Fulco | 4 | 2 | | LL | R Baranski | 4 | 0 | | | | | | | | |
| | R Simpson | 1 | 1 | | 15 | L McNeil | 6 | 6 | | | | | | | | |
| 15 | L McNeil | 6 | 6 | | | | | | | | | | 1 | Steffi Graf | 6 | 6 |
| 13 | L Savchenko | 0 | 6 | 6 | | | | | | | | | 5 | Natalia Zvereva | 0 | 4 |
| | H Cioffi | 6 | 1 | 0 | 13 | L Savchenko | 2 | 2$^r$ | | | | | | | | |
| | J Durie | 7 | 6 | | | J Durie | 6 | 4 | | | | | | | | |
| | S Martin | 6 | 3 | | | | | | | J Durie | 4 | 2 | | | | |
| | N Miyagi | 4 | 7 | 2 | | | | | 5 | N Zvereva | 6 | 6 | | | | |
| | S Loosemore | 6 | 6 | 6 | | S Loosemore | | | | | | | | | | |
| | | | | | 5 | N Zvereva | w/o | | | | | | | | | |

#### 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 |
| | | | | | 4 | M Maleeva-Fragniere | 4 | | | | | | | | | | |
| | M Maleeva | 6 | 6 | | | M Maleeva | 1$^r$ | | | | | | | | | | |
| Q | K Jordan | 4 | 3 | | | | | | | 4 | M Maleeva-Fragniere | 6 | 6 | | | | |
| Q | Y Segal | 3 | 0 | | | | | | | 9 | H Kelesi | 1 | 0 | | | | |
| | A Minter | 6 | 6 | | | A Minter | 4 | 4 | | | | | | | | | |
| | C Cunningham | 6 | 3 | | 9 | H Kelesi | 6 | 6 | | | | | | | | | |
| 9 | H Kelesi | 7 | 6 | | | | | | | | | | | 4 | Manuela Maleeva-Fragniere | 3 | 2 |
| 11 | C Porwik | 6 | 7 | | | | | | | | | | | 7 | Nathalie Tauziat | 6 | 6 |
| | E Burgin | 2 | 6 | | 11 | C Porwik | 4 | 6 | 6 | | | | | | | | |
| | C Chabalgoity | 0 | 7 | 0 | | P Hy | 6 | 4 | 7 | | | | | | | | |
| | P Hy | 6 | 5 | 6 | | | | | | | P Hy | 3 | 2 | | | | |
| | E Smylie | 1 | 6 | 6 | | | | | | 7 | N Tauziat | 6 | 6 | | | | |
| | B Bowes | 6 | 2 | 7 | | B Bowes | 3 | 6 | 2 | | | | | | | | |
| | | | | | 7 | N Tauziat | 6 | 2 | 6 | | | | | | | | |

### 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 | Quarterfinals |
| | | | | | 8 | B Paulus | 6 | 6 | 6 | | | | | | | | | | |
| | M Strandlund | 3 | 1 | | | T Phelps | 7 | 4 | 4 | | | | | | | | | | |
| | T Phelps | 6 | 6 | | | | | | | 8 | B Paulus | 2 | 6 | 3 | | | | | |
| Q | L Field | 6 | 7 | | | | | | | | N Sawamatsu | 6 | 1 | 6 | | | | | |
| | A Leand | 3 | 5 | | Q | L Field | 1 | 3 | | | | | | | | | | | |
| | N Sawamatsu | 6 | 6 | | | N Sawamatsu | 6 | 6 | | | | | | | | | | | |
| 14 | J Halard | 3 | 3 | | | | | | | | | | | | | Naoko Sawamatsu | 7 | 2 | 4 |
| 16 | R Rajchrtová | 7 | 4 | 5 | | | | | | | | | | | 3 | Katerina Maleeva | 6 | 6 | 6 |
| Q | S Gomer | 6 | 6 | 7 | Q | S Gomer | 5 | 2 | | | | | | | | | | | |
| Q | J Richardson | 6 | 6 | | Q | J Richardson | 7 | 6 | | | | | | | | | | | |
| Q | L Allen | 0 | 4 | | | | | | | Q | J Richardson | 0 | 0 | | | | | | |
| | B Cordwell | 6 | 3 | 6 | | | | | | 3 | K Maleeva | 6 | 6 | | | | | | |
| | J Hetherington | 2 | 6 | 4 | | B Cordwell | 0 | 2 | | | | | | | | | | | |
| | | | | | 3 | 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 | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 6 | J Capriati | 6 | 6 | | | | | | | | | |
| Q | L Green | 6 | 6 | | Q | L Green | 4 | 0 | | | | | | | | | |
| | M Mroz | 4 | 0 | | | | | | 6 | J Capriati | 6 | 6 | | | | | |
| | C Benjamin | 2 | 6 | 7 | | | | | | C Benjamin | 3 | 2 | | | | | |
| | B Nagelsen | 6 | 3 | 6 | | C Benjamin | 4 | | | | | | | | | | |
| | A Grossman | 7 | 4 | 4 | 12 | M Bollegraf | 2$^r$ | | | | | | | | | | |
| 12 | M Bollegraf | 5 | 6 | 6 | | | | | | | | | 6 | Jennifer Capriati | 6 | 1 | 4 |
| 10 | R Reggi | 6 | 6 | | | | | | | | | | 2 | Gabriela Sabatini | 3 | 6 | 6 |
| | I Demongeot | 4 | 3 | | 10 | R Reggi | 6 | 6 | | | | | | | | | |
| | M Werdel | 7 | 6 | | | M Werdel | 1 | 0 | | | | | | | | | |
| | S Italiano | 5 | 2 | | | | | | 10 | R Reggi | 1 | 0 | | | | | |
| | K Rinaldi | 6 | 6 | | | | | | 2 | G Sabatini | 6 | 6 | | | | | |
| Q | C Toleafoa | 4 | 1 | | | K Rinaldi | 0 | 3 | | | | | | | | | |
| | | | | | 2 | G Sabatini | 6 | 6 | | | | | | | | | |