Head to head
2
Hard
4
3
Clay
0
2
Grass
0
6
Carpet
2
Tom Okker's wins on the left · Marty Riessen's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (19)
| 1976 | Richmond WCT | Carpet | R16 | Tom Okker | 6-2 6-2 |
| 1974 | Stockholm | Hard | QF | Tom Okker | 7-6 6-4 |
| 1974 | Rotterdam WCT | Carpet | QF | Tom Okker | 6-4 6-1 |
| 1974 | Washington WCT | Carpet | QF | Tom Okker | 7-5 1-6 6-3 |
| 1972 | Rome WCT | Carpet | QF | Tom Okker | 7-6 6-4 |
| 1972 | Chicago WCT | Carpet | QF | Tom Okker | 6-4 4-6 6-2 |
| 1971 | WCT Finals | Carpet | QF | Tom Okker | 6-3 6-3 6-0 |
| 1971 | Australian Open | Grass | QF | Tom Okker | 6-3 6-3 6-3 |
| 1971 | London-1 | Carpet | R16 | Marty Riessen | 6-4 6-4 |
| 1970 | Brussels | Clay | QF | Tom Okker | 6-3 1-6 6-0 6-4 |
| 1970 | London-1 | Carpet | SF | Marty Riessen | 9-7 6-3 |
| 1969 | Newport | Grass | RR | Tom Okker | 6-0 6-2 |
| 1969 | Milwaukee | Clay | F | Tom Okker | 6-3 6-4 |
| 1968 | Los Angeles-2 | Hard | R32 | Marty Riessen | 6-3 6-2 |
| 1968 | Johannesburg-1 | Hard | F | Tom Okker | 12-10 6-1 6-4 |
| 1968 | Curacao | Hard | F | Marty Riessen | 7-5 3-6 9-11 6-2 6-2 |
| 1968 | Caracas | Hard | QF | Marty Riessen | 7-5 6-4 |
| 1968 | Barranquilla | Clay | F | Tom Okker | 8-6 6-3 6-3 |
| 1968 | Bloemfontein | Hard | F | Marty Riessen | 7-5 6-3 |
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.