Head to head
1
Grass
0
1
Carpet
0
Guillermo Vilas's wins on the left · Allan Stone's on the right · bar lengths share one scale
All meetings (2)
| 1978 | Australian Open | Grass | R16 | Guillermo Vilas | 6-4 6-4 6-4 |
| 1975 | San Francisco | Carpet | R32 | Guillermo Vilas | 7-6(4) 6-0 |
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.