By surface
| Surface | Gene Mayer | Hans Gildemeister |
|---|---|---|
| Clay | 0 | 2 |
All meetings (2)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1978-07-10 | ATP | Cincinnati | Round of 16 | Clay | Hans Gildemeister | 3-6 | 2-6 | |||
| 1977-11-07 | ATP | Bogota | Round of 32 | Clay | Hans Gildemeister | 3-6 | 3-6 |