Head to head
2
Grass
0
1
Carpet
0
Guillermo Vilas's wins on the left · John Sadri's on the right · bar lengths share one scale
All meetings (3)
| 1980 | Australian Open | Grass | QF | Guillermo Vilas | 7-5 6-4 2-6 4-6 6-3 |
| 1980 | Richmond WCT | Carpet | QF | Guillermo Vilas | 6-4 6-7 7-6 |
| 1979 | Australian Open | Grass | F | Guillermo Vilas | 7-6 6-3 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.