By surface
| Surface | Heinz Gunthardt | Trevor Allan |
|---|---|---|
| Clay | 1 | 1 |
All meetings (2)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1985-07-08 | ATP | Gstaad | Round of 16 | Clay | Heinz Gunthardt | 7-6 | 6-1 | |||
| 1984-07-09 | ATP | Gstaad | Quarterfinal | Clay | Trevor Allan | 4-6 | 3-6 |