By surface
| Surface | Heinz Gunthardt | Damir Keretic |
|---|---|---|
| Clay | 2 | 1 |
All meetings (3)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1986-05-26 | ATP | Roland Garros | Round of 128 | Clay | Damir Keretic | 6-4 | 3-6 | 6-4 | 6-7 | 6-8 |
| 1985-05-27 | ATP | Roland Garros | Round of 128 | Clay | Heinz Gunthardt | 6-0 | 6-3 | 6-4 | ||
| 1983-09-30 | ATP | Davis Cup EUR F: FRG vs SUI | Round Robin | Clay | Heinz Gunthardt | 6-3 | 7-5 |