By surface
| Surface | Heinz Gunthardt | Peter Rennert |
|---|---|---|
| Carpet | 1 | 0 |
All meetings (1)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1981-10-26 | ATP | Tokyo Indoor | Round of 16 | Carpet | Heinz Gunthardt | 7-5 | 6-3 |
| Surface | Heinz Gunthardt | Peter Rennert |
|---|---|---|
| Carpet | 1 | 0 |
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1981-10-26 | ATP | Tokyo Indoor | Round of 16 | Carpet | Heinz Gunthardt | 7-5 | 6-3 |