Head to head
2
Hard
0
1
Carpet
1
Butch Walts's wins on the left · Cliff Drysdale's on the right · bar lengths share one scale
All meetings (4)
| 1979 | Maui | Hard | R32 | Butch Walts | 6-4 6-1 |
| 1979 | Tulsa | Hard | R32 | Butch Walts | 6-4 7-6 |
| 1978 | Tokyo-2 | Carpet | R32 | Cliff Drysdale | 6-4 6-4 |
| 1976 | San Francisco | Carpet | R16 | Butch Walts | 6-1 7-6 |
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.