By surface
| Surface | Billie Jean King | Ana Maria Piotti |
|---|---|---|
| Clay | 1 | 0 |
All meetings (1)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1969-11-11 | WTA | Buenos Aires | Round of 16 | Clay | Billie Jean King | 6-0 | 6-0 |
| Surface | Billie Jean King | Ana Maria Piotti |
|---|---|---|
| Clay | 1 | 0 |
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1969-11-11 | WTA | Buenos Aires | Round of 16 | Clay | Billie Jean King | 6-0 | 6-0 |