Head to head
1
Clay
1
Guillermo Vilas's wins on the left · Cliff Richey's on the right · bar lengths share one scale
All meetings (2)
| 1976 | Indianapolis-2 | Clay | R32 | Guillermo Vilas | 6-1 6-2 |
| 1971 | Buenos Aires | Clay | R16 | Cliff Richey | 3-6 6-4 4-6 7-6 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.