Head to head
6
Clay
0
Guillermo Vilas's wins on the left · Jairo Velasco Sr.'s on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (6)
| 1982 | Roland Garros | Clay | R64 | Guillermo Vilas | 6-1 6-2 6-1 |
| 1981 | Mar del Plata | Clay | R32 | Guillermo Vilas | 6-1 6-1 |
| 1978 | Aix-en-Provence | Clay | R32 | Guillermo Vilas | 6-1 6-3 |
| 1977 | Paris-1 | Clay | R16 | Guillermo Vilas | 6-3 6-0 |
| 1976 | Boston | Clay | R32 | Guillermo Vilas | 7-5 3-6 7-5 |
| 1974 | Louisville | Clay | R32 | Guillermo Vilas | 6-1 4-6 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.