Head to head
0
Hard
2
3
Clay
0
1
Grass
1
1
Carpet
2
Guillermo Vilas's wins on the left · Arthur Ashe's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (10)
| 1979 | Richmond WCT | Carpet | SF | Guillermo Vilas | 6-3 6-4 |
| 1979 | Philadelphia WCT | Carpet | R16 | Arthur Ashe | 6-3 7-5 |
| 1978 | Roland Garros | Clay | R16 | Guillermo Vilas | 6-2 6-2 6-2 |
| 1975 | San Francisco | Carpet | F | Arthur Ashe | 6-0 7-6(4) |
| 1975 | Boston | Clay | SF | Guillermo Vilas | 4-6 6-3 6-0 6-4 |
| 1974 | Stockholm | Hard | SF | Arthur Ashe | 6-4 6-4 |
| 1974 | US Open | Grass | R16 | Arthur Ashe | 6-7 6-4 6-4 7-5 |
| 1974 | Washington-2 | Clay | QF | Guillermo Vilas | 6-2 6-4 |
| 1974 | Nottingham | Grass | R32 | Guillermo Vilas | 7-5 7-5 |
| 1974 | Tucson | Hard | R32 | Arthur Ashe | 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.