By surface
| Surface | Heinz Gunthardt | Marko Ostoja |
|---|
All meetings (1)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1979-03-16 | ATP | Davis Cup EUR PR: SUI vs YUG | Round Robin | — | Heinz Gunthardt | 6-1 | 6-3 | 6-4 |
| Surface | Heinz Gunthardt | Marko Ostoja |
|---|
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1979-03-16 | ATP | Davis Cup EUR PR: SUI vs YUG | Round Robin | — | Heinz Gunthardt | 6-1 | 6-3 | 6-4 |