By surface
| Surface | Clark Graebner | Milan Holecek |
|---|---|---|
| Clay | 1 | 0 |
All meetings (2)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1974-04-22 | ATP | St. Louis | Round of 32 | Clay | Clark Graebner | 2-6 | 7-65 | 6-1 | ||
| 1972-02-06 | ATP | Kansas City | Round of 16 | — | Clark Graebner | UNK | ||||