By surface
| Surface | Guillermo Vilas | Juan Avendano |
|---|---|---|
| Clay | 3 | 0 |
All meetings (3)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1983-09-19 | ATP | Geneva | Round of 32 | Clay | Guillermo Vilas | 6-4 | 6-3 | |||
| 1982-10-04 | ATP | Barcelona | Round of 16 | Clay | Guillermo Vilas | 7-6 | 6-2 | |||
| 1982-05-24 | ATP | Roland Garros | Round of 32 | Clay | Guillermo Vilas | 6-0 | 6-1 | 6-0 |