Head to head
1
Hard
0
1
Clay
0
0
Grass
2
John Alexander's wins on the left · Victor Amaya's on the right · bar lengths share one scale
All meetings (4)
| 1981 | Maui | Hard | R16 | John Alexander | 7-6 7-6 |
| 1980 | Australian Open | Grass | R64 | Victor Amaya | 3-6 6-4 7-5 6-3 |
| 1977 | Washington-2 | Clay | R32 | John Alexander | 6-2 6-4 |
| 1977 | Adelaide-1 | Grass | SF | Victor Amaya | 6-4 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.