Head to head
1
Hard
2
1
Clay
1
1
Carpet
1
Cliff Drysdale'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 (7)
| 1978 | Palm Springs | Hard | R32 | Cliff Richey | 6-3 7-6 |
| 1978 | Baltimore | Carpet | QF | Cliff Drysdale | 3-6 6-4 6-2 |
| 1975 | Boston | Clay | R32 | Cliff Drysdale | 2-6 6-3 6-4 |
| 1975 | Fort Worth WCT | Hard | R16 | Cliff Drysdale | 3-6 7-6(5) 6-3 |
| 1972 | Essen WCT | Carpet | R16 | Cliff Richey | 7-5 6-3 |
| 1972 | Tokyo WCT | Hard | QF | Cliff Richey | 6-2 7-6 |
| 1972 | Charlotte WCT | Clay | SF | Cliff Richey | 6-2 6-3 |
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.