Head to head
0
Hard
1
1
Clay
0
2
Carpet
0
Tom Okker's wins on the left · Roy Barth's on the right · bar lengths share one scale
All meetings (4)
| 1972 | Vancouver WCT | Carpet | R32 | Tom Okker | 6-3 6-1 |
| 1972 | Macon WCT | Carpet | R16 | Tom Okker | 6-4 6-3 |
| 1969 | Los Angeles-2 | Hard | R32 | Roy Barth | 6-4 6-1 |
| 1968 | Hamburg | Clay | R32 | Tom Okker | 3-6 6-0 2-6 6-3 6-0 |
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.