By surface
| Surface | Gene Mayer | Jim Delaney |
|---|---|---|
| Carpet | 1 | 0 |
All meetings (1)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1978-03-13 | ATP | Washington Indoor | Round of 32 | Carpet | Gene Mayer | 6-2 | 6-0 |
| Surface | Gene Mayer | Jim Delaney |
|---|---|---|
| Carpet | 1 | 0 |
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1978-03-13 | ATP | Washington Indoor | Round of 32 | Carpet | Gene Mayer | 6-2 | 6-0 |