Head to head
1
Hard
0
3
Clay
0
Guillermo Vilas's wins on the left · Frew McMillan's on the right · bar lengths share one scale
All meetings (4)
| 1976 | Tehran | Clay | R64 | Guillermo Vilas | 6-2 6-3 |
| 1974 | Stockholm | Hard | R16 | Guillermo Vilas | 6-4 6-0 |
| 1972 | Cincinnati | Clay | SF | Guillermo Vilas | 6-4 2-6 6-4 |
| 1969 | Buenos Aires | Clay | R32 | Guillermo Vilas | 7-5 6-1 6-2 |
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.