Head to head
0
Hard
2
5
Clay
2
1
Grass
0
1
Carpet
1
Guillermo Vilas's wins on the left · Ilie Nastase's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (12)
| 1983 | Roland Garros | Clay | R32 | Guillermo Vilas | 6-1 6-2 6-1 |
| 1981 | Monte-Carlo | Clay | R32 | Guillermo Vilas | 6-0 6-0 |
| 1981 | Nancy | Hard | R16 | Ilie Nastase | 7-6 6-3 |
| 1980 | Richmond WCT | Carpet | R16 | Guillermo Vilas | 7-6 6-4 |
| 1977 | Aix-en-Provence | Clay | F | Ilie Nastase | 6-1 7-5 |
| 1977 | Virginia Beach | Clay | F | Guillermo Vilas | 6-2 4-6 6-2 |
| 1976 | Carlsbad | Hard | SF | Ilie Nastase | 7-6 6-0 |
| 1975 | Masters | Carpet | SF | Ilie Nastase | 6-0 6-3 6-4 |
| 1975 | Louisville | Clay | F | Guillermo Vilas | 6-4 6-3 |
| 1974 | Masters | Grass | F | Guillermo Vilas | 7-6 6-2 3-6 3-6 6-4 |
| 1974 | Madrid | Clay | SF | Ilie Nastase | 6-1 1-6 6-1 6-1 |
| 1974 | Boston | Clay | QF | Guillermo Vilas | 7-5 1-6 6-1 |
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.