Tokyo Nichirei 1991 WTA
Final
| Winner | Loser | Score | |
|---|---|---|---|
| Monica Seles | d. | Mary Joe Fernandez | 6-1 6-1 |
Semifinals
| Winner | Loser | Score | |
|---|---|---|---|
| Monica Seles | d. | Amy Frazier | 6-4 6-0 |
| Mary Joe Fernandez | d. | Katerina Maleeva | 3-6 6-1 6-4 |
Quarterfinals
| Winner | Loser | Score | |
|---|---|---|---|
| Monica Seles | d. | Maya Kidowaki | 6-0 6-0 |
| Amy Frazier | d. | Debbie Graham | 7-5 6-1 |
| Katerina Maleeva | d. | Laura Arraya | 6-3 3-6 6-1 |
| Mary Joe Fernandez | d. | Marianne Werdel Witmeyer | 6-2 6-3 |
Round of 16
| Winner | Loser | Score | |
|---|---|---|---|
| Monica Seles | d. | Rika Hiraki | 6-3 6-4 |
| Maya Kidowaki | d. | Carrie Cunningham | 5-7 7-6 6-1 |
| Amy Frazier | d. | Naoko Sawamatsu | 6-1 0-6 6-3 |
| Debbie Graham | d. | Mareen Louie Harper | 6-4 6-4 |
| Laura Arraya | d. | Akiko Kijimuta | 6-1 6-2 |
| Katerina Maleeva | d. | Andrea Strnadova | 6-1 6-2 |
| Marianne Werdel Witmeyer | d. | Anne Minter | 7-5 7-6 |
| Mary Joe Fernandez | d. | Patricia Hy Boulais | 6-1 6-1 |
Round of 32
| Winner | Loser | Score | |
|---|---|---|---|
| Rika Hiraki | d. | Misumi Miyauchi | 4-6 6-4 6-0 |
| Maya Kidowaki | d. | Cristina Tessi | 6-2 6-1 |
| Carrie Cunningham | d. | Kimiko Date Krumm | 2-6 6-4 7-5 |
| Naoko Sawamatsu | d. | Mana Endo | 6-3 6-1 |
| Mareen Louie Harper | d. | Linda Wild | 3-6 7-6 6-1 |
| Debbie Graham | d. | Pam Shriver | 7-5 6-4 |
| Laura Arraya | d. | Yayuk Basuki | 7-5 7-5 |
| Akiko Kijimuta | d. | Monique Javer | 6-3 2-6 6-1 |
| Andrea Strnadova | d. | Ei Iida | 6-7 6-3 6-4 |
| Marianne Werdel Witmeyer | d. | Nana Smith | 6-4 6-3 |
| Anne Minter | d. | Miki Mizokuchi | 6-2 6-3 |
| Patricia Hy Boulais | d. | Liz Smylie | 6-0 7-5 |
Data: Jeff Sackmann / Tennis Abstract — CC BY-NC-SA 4.0