Head to head
11
Clay
3
Guillermo Vilas's wins on the left · Victor Pecci's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (14)
| 1982 | North Conway | Clay | R64 | Victor Pecci | 5-7 6-4 6-2 |
| 1981 | Rome | Clay | SF | Victor Pecci | 7-6 6-4 7-6 |
| 1981 | Houston WCT | Clay | SF | Guillermo Vilas | 6-1 6-3 |
| 1981 | Mar del Plata | Clay | F | Guillermo Vilas | 2-6 6-3 2-1 RET |
| 1979 | North Conway | Clay | QF | Guillermo Vilas | 6-4 6-0 |
| 1979 | Washington-2 | Clay | F | Guillermo Vilas | 7-6 7-6 |
| 1979 | Roland Garros | Clay | QF | Victor Pecci | 6-0 6-2 7-5 |
| 1978 | Monte-Carlo WCT | Clay | R16 | Guillermo Vilas | 6-3 7-6 |
| 1977 | Bogota | Clay | SF | Guillermo Vilas | 6-4 6-2 |
| 1977 | Washington-2 | Clay | R16 | Guillermo Vilas | 6-3 6-7 6-1 |
| 1975 | Tehran | Clay | R16 | Guillermo Vilas | 6-2 6-2 |
| 1975 | Louisville | Clay | R64 | Guillermo Vilas | 6-4 6-4 |
| 1975 | Hilversum | Clay | SF | Guillermo Vilas | 6-4 6-4 7-6 |
| 1974 | Rome | Clay | R64 | Guillermo Vilas | 6-2 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.