By surface
| Surface | Heinz Gunthardt | Kanyab Derafshidjavan |
|---|
All meetings (1)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1975-10-10 | ATP | Davis Cup EUR PR: IRI vs SUI | Round Robin | — | Kanyab Derafshidjavan | 4-6 | 5-7 | 6-3 | 8-6 | 3-6 |
| Surface | Heinz Gunthardt | Kanyab Derafshidjavan |
|---|
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1975-10-10 | ATP | Davis Cup EUR PR: IRI vs SUI | Round Robin | — | Kanyab Derafshidjavan | 4-6 | 5-7 | 6-3 | 8-6 | 3-6 |