By surface
| Surface | Heinz Gunthardt | Tony Giammalva |
|---|---|---|
| Clay | 2 | 1 |
All meetings (3)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1982-07-05 | ATP | Gstaad | Round of 16 | Clay | Heinz Gunthardt | 6-0 | 6-1 | |||
| 1980-07-14 | ATP | Bastad | Quarterfinal | Clay | Tony Giammalva | 5-7 | 1-6 | |||
| 1980-07-07 | ATP | Gstaad | Round of 16 | Clay | Heinz Gunthardt | 6-3 | 6-1 |