Head to head
1
Hard
0
1
Clay
0
3
Grass
0
Clark Graebner's wins on the left · Ray Keldie's on the right · bar lengths share one scale
All meetings (5)
| 1971 | Beckenham | Grass | QF | Clark Graebner | 6-1 3-6 6-4 |
| 1970 | Los Angeles-2 | Hard | R64 | Clark Graebner | 3-6 6-4 6-2 |
| 1970 | US Open | Grass | R64 | Clark Graebner | 6-1 7-6 4-6 6-4 |
| 1970 | Jacksonville | Clay | QF | Clark Graebner | 2-6 6-3 6-2 |
| 1969 | Boston-2 | Grass | R32 | Clark Graebner | 6-3 6-0 |
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.