Head to head
1
Hard
0
1
Clay
0
1
Grass
0
Clark Graebner's wins on the left · Richard Russell's on the right · bar lengths share one scale
All meetings (3)
| 1972 | San Juan | Hard | RR | Clark Graebner | 6-4 6-2 |
| 1970 | Jacksonville | Clay | R16 | Clark Graebner | 7-5 6-3 |
| 1969 | Southampton | Grass | R16 | Clark Graebner | 5-7 6-1 6-2 |
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.