Head to head
0
Hard
2
1
Clay
2
0
Grass
1
0
Carpet
1
Guillermo Vilas's wins on the left · Tom Okker's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (7)
| 1979 | Toronto | Hard | R32 | Tom Okker | 6-3 7-5 |
| 1978 | Wimbledon | Grass | R32 | Tom Okker | 6-3 6-4 6-2 |
| 1974 | London-2 | Carpet | 3rd/4th | Tom Okker | 6-2 6-4 |
| 1974 | Boston | Clay | SF | Tom Okker | 6-4 6-3 6-2 |
| 1974 | Toronto-2 | Clay | SF | Guillermo Vilas | 7-5 6-2 |
| 1973 | Paris | Hard | R16 | Tom Okker | 6-1 6-1 |
| 1973 | Madrid-2 | Clay | R16 | Tom Okker | 6-2 6-4 |
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.