By surface
| Surface | Heinz Gunthardt | Byron Bertram |
|---|---|---|
| Carpet | 1 | 0 |
All meetings (1)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1978-02-12 | ATP | Springfield | Semifinal | Carpet | Heinz Gunthardt | 7-5 | 6-2 |
| Surface | Heinz Gunthardt | Byron Bertram |
|---|---|---|
| Carpet | 1 | 0 |
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1978-02-12 | ATP | Springfield | Semifinal | Carpet | Heinz Gunthardt | 7-5 | 6-2 |