By surface
| Surface | John Sadri | Heinz Gunthardt |
|---|---|---|
| Carpet | 0 | 1 |
All meetings (1)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1980-03-10 | ATP | Rotterdam | Quarterfinal | Carpet | Heinz Gunthardt | 6-7 | 7-5 | 2-6 |
| Surface | John Sadri | Heinz Gunthardt |
|---|---|---|
| Carpet | 0 | 1 |
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1980-03-10 | ATP | Rotterdam | Quarterfinal | Carpet | Heinz Gunthardt | 6-7 | 7-5 | 2-6 |