Head to head
1
Hard
2
1
Clay
1
2
Carpet
1
Clark Graebner's wins on the left · Cliff Richey's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (8)
| 1972 | London-1 | Carpet | F | Cliff Richey | 7-5 6-7 7-5 6-0 |
| 1971 | Masters | Hard | RR | Clark Graebner | 6-7 6-4 6-3 |
| 1971 | Houston | Clay | F | Cliff Richey | 6-1 6-2 6-2 |
| 1971 | San Juan | Hard | SF | Cliff Richey | 7-6 6-1 |
| 1971 | Salisbury | Carpet | F | Clark Graebner | 2-6 7-6 1-6 7-6 6-0 |
| 1970 | Houston | Clay | F | Clark Graebner | 2-6 6-3 5-7 6-3 6-2 |
| 1970 | New York | Carpet | RR | Clark Graebner | 6-3 |
| 1968 | Salisbury | Hard | F | Cliff Richey | 6-4 6-4 6-4 |
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.