Head to head
1
Hard
0
1
Clay
0
1
Carpet
1
Butch Walts's wins on the left · Victor Amaya's on the right · bar lengths share one scale
All meetings (4)
| 1980 | Tokyo-2 | Carpet | R16 | Victor Amaya | 7-6 6-4 |
| 1977 | Dayton | Carpet | R32 | Butch Walts | 4-6 7-6 7-5 |
| 1976 | Little Rock | Hard | R32 | Butch Walts | 7-5 7-6 |
| 1976 | Boca Raton | Clay | R16 | Butch Walts | 6-4 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.