Head to head
1
Hard
0
3
Clay
0
0
Grass
1
Guillermo Vilas's wins on the left · Billy Martin's on the right · bar lengths share one scale
All meetings (5)
| 1978 | Roland Garros | Clay | R64 | Guillermo Vilas | 6-2 2-6 3-6 6-2 6-4 |
| 1977 | Columbus | Clay | SF | Guillermo Vilas | 6-0 6-2 |
| 1977 | Wimbledon | Grass | R32 | Billy Martin | 6-2 6-4 6-2 |
| 1977 | Palm Springs | Hard | R16 | Guillermo Vilas | 6-3 6-3 |
| 1976 | Rome-2 | Clay | R32 | Guillermo Vilas | 6-3 7-5 |
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.