Head to head
0
Hard
1
0
Clay
1
2
Grass
1
0
Carpet
5
Owen Davidson's wins on the left · Cliff Drysdale's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (10)
| 1972 | Philadelphia WCT | Carpet | R32 | Cliff Drysdale | 6-2 6-3 |
| 1971 | Quebec WCT | Carpet | R16 | Cliff Drysdale | 6-2 7-6 |
| 1971 | Dallas WCT | Carpet | R16 | Cliff Drysdale | 6-3 7-6 |
| 1971 | Miami WCT | Hard | R32 | Cliff Drysdale | 6-1 7-5 |
| 1971 | Chicago WCT | Carpet | R16 | Cliff Drysdale | 6-3 6-4 |
| 1971 | Philadelphia WCT | Carpet | R16 | Cliff Drysdale | 7-5 7-5 |
| 1969 | US Open | Grass | R128 | Owen Davidson | 6-2 6-3 6-4 |
| 1969 | Gstaad | Clay | QF | Cliff Drysdale | 6-4 6-2 |
| 1969 | Wimbledon | Grass | R64 | Cliff Drysdale | 6-4 6-4 11-13 6-2 |
| 1968 | Queen's Club | Grass | R32 | Owen Davidson | 6-3 2-6 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.