Head to head
1
Hard
1
0
Clay
1
Colin Dowdeswell's wins on the left · Guillermo Vilas's on the right · bar lengths share one scale
All meetings (3)
| 1984 | Basel | Hard | R16 | Guillermo Vilas | 6-4 6-4 |
| 1978 | Johannesburg-1 | Hard | SF | Colin Dowdeswell | 6-1 6-7 6-4 |
| 1975 | Tehran | Clay | R32 | Guillermo Vilas | 6-4 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.