Head to head
1
Hard
0
1
Grass
0
Clark Graebner's wins on the left · Mike Estep's on the right · bar lengths share one scale
All meetings (2)
| 1971 | Haverford | Grass | R32 | Clark Graebner | 7-6 7-5 |
| 1968 | Salisbury | Hard | R16 | Clark Graebner | 1-0 RET |
Methodology
Head-to-head totals and surface splits exclude walkovers (no match was played), which follows ATP convention — walkover meetings still appear in the match list. The momentum chart plots the running lead across all counted meetings, oldest to newest.