By surface
| Surface | Alex Diaz | Mark C Johnson |
|---|---|---|
| Clay | 1 | 0 |
All meetings (1)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1970-05-25 | WTA | Roland Garros | Round of 16 | Clay | Julie Heldman | 6-3 | 7-9 | 4-6 |
| Surface | Alex Diaz | Mark C Johnson |
|---|---|---|
| Clay | 1 | 0 |
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1970-05-25 | WTA | Roland Garros | Round of 16 | Clay | Julie Heldman | 6-3 | 7-9 | 4-6 |