By surface
| Surface | Mary Hamm | Nancy Ornstein |
|---|---|---|
| Hard | 2 | 0 |
All meetings (2)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1978-02-06 | WTA | Toronto Futures | Round of 32 | Hard | Mary Hamm | 6-1 | 6-1 | |||
| 1976-12-06 | WTA | Kauai | Round of 16 | Hard | Mary Hamm | 3-6 | 6-0 | 6-1 |