Head to head
0
Clay
1
0
Grass
1
1
Carpet
0
Butch Walts's wins on the left · John Alexander's on the right · bar lengths share one scale
All meetings (3)
| 1979 | Louisville | Clay | R64 | John Alexander | 6-3 6-1 |
| 1977 | Adelaide-2 | Grass | R16 | John Alexander | 6-4 6-7 9-7 |
| 1977 | San Francisco | Carpet | R64 | Butch Walts | 7-5 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.