Head to head
2
Hard
0
2
Clay
0
2
Carpet
2
Guillermo Vilas's wins on the left · Bill Scanlon's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (8)
| 1983 | Detroit WCT | Carpet | SF | Guillermo Vilas | 6-3 7-6 6-4 |
| 1982 | Baltimore WCT | Carpet | QF | Guillermo Vilas | 6-2 6-0 |
| 1982 | Gstaad | Clay | SF | Guillermo Vilas | 6-0 6-2 |
| 1982 | Zurich WCT | Carpet | QF | Bill Scanlon | 6-4 6-4 |
| 1980 | Monte-Carlo WCT | Clay | R16 | Guillermo Vilas | 6-3 6-1 |
| 1980 | Frankfurt WCT | Carpet | R32 | Bill Scanlon | 6-2 6-1 |
| 1980 | Rancho Mirage | Hard | R32 | Guillermo Vilas | 4-6 6-3 6-4 |
| 1978 | US Open | Hard | R64 | Guillermo Vilas | 5-7 6-4 6-3 |
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.