Head to head
2
Clay
0
1
Grass
0
Guillermo Vilas's wins on the left · John James's on the right · bar lengths share one scale
All meetings (3)
| 1978 | Sydney-2 | Grass | R16 | Guillermo Vilas | 6-2 6-3 |
| 1976 | Madrid-2 | Clay | R64 | Guillermo Vilas | 6-0 6-3 |
| 1976 | Louisville | Clay | R64 | Guillermo Vilas | 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.