St. Petersburg 1970 WTA
Final
| Winner | Loser | Score | |
|---|---|---|---|
| Nancy Richey | d. | Valerie Ziegenfuss | 6-1 6-3 |
Semifinals
| Winner | Loser | Score | |
|---|---|---|---|
| Nancy Richey | d. | Stephanie Defina | 6-3 7-9 6-4 |
| Valerie Ziegenfuss | d. | Kathleen Harter | 7-5 6-2 |
Quarterfinals
| Winner | Loser | Score | |
|---|---|---|---|
| Nancy Richey | d. | Vlasta Kodesova | 6-0 6-1 |
| Stephanie Defina | d. | Ilse Buding | 6-2 6-3 |
| Valerie Ziegenfuss | d. | Judy Alvarez | 6-2 6-3 |
| Kathleen Harter | d. | Eva Lundquist | 6-1 8-6 |
Round of 16
| Winner | Loser | Score | |
|---|---|---|---|
| Vlasta Kodesova | d. | Isabella Ortiz | 6-2 6-8 6-1 |
| Stephanie Defina | d. | Kerry Harris | 6-3 7-5 |
| Ilse Buding | d. | Toni Novack | 4-6 6-3 6-3 |
| Judy Alvarez | d. | Sally Holdsworth | 6-3 6-4 |
| Valerie Ziegenfuss | d. | Isabel Fernandez De Soto | 6-0 6-4 |
| Eva Lundquist | d. | Judith Szorenyi | UNK |
| Kathleen Harter | d. | Patricia Reese | 6-4 3-6 6-2 |
Data: Jeff Sackmann / Tennis Abstract — CC BY-NC-SA 4.0