Head to head
4
Hard
3
1
Clay
2
1
Grass
3
4
Carpet
10
Tom Okker's wins on the left · Arthur Ashe's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (28)
| 1975 | Paris | Hard | F | Tom Okker | 6-3 2-6 6-3 3-6 6-4 |
| 1975 | Stockholm WCT | Carpet | F | Arthur Ashe | 6-4 6-2 |
| 1975 | Rotterdam WCT | Carpet | F | Arthur Ashe | 3-6 6-2 6-4 |
| 1975 | Richmond WCT | Carpet | SF | Arthur Ashe | 6-4 6-4 |
| 1974 | London-2 | Carpet | QF | Tom Okker | 6-7 6-4 6-4 |
| 1974 | Stockholm | Hard | F | Arthur Ashe | 6-2 6-2 |
| 1974 | Tucson | Hard | SF | Arthur Ashe | 6-1 6-4 |
| 1973 | Stockholm | Hard | QF | Tom Okker | 6-4 2-6 6-3 |
| 1973 | Paris | Hard | QF | Tom Okker | 6-1 3-6 6-3 |
| 1973 | Washington-3 | Clay | F | Arthur Ashe | 6-4 6-2 |
| 1973 | Washington WCT | Carpet | F | Tom Okker | 6-3 6-7(4) 7-6(3) |
| 1972 | Rome WCT | Carpet | SF | Arthur Ashe | 6-7 6-3 6-3 |
| 1972 | Rotterdam WCT | Carpet | F | Arthur Ashe | 3-6 6-2 6-1 |
| 1972 | Montreal WCT | Carpet | SF | Arthur Ashe | 7-5 6-4 |
| 1972 | Boston WCT | Hard | SF | Tom Okker | 7-6 7-6 6-4 |
| 1972 | WCT Finals | Carpet | QF | Arthur Ashe | 6-4 6-1 6-3 |
| 1972 | Denver WCT | Carpet | QF | Tom Okker | 7-5 6-3 |
| 1972 | Chicago WCT | Carpet | F | Tom Okker | 4-6 6-2 6-3 |
| 1971 | Bologna WCT | Carpet | QF | Arthur Ashe | 7-6 6-3 |
| 1971 | Stockholm WCT | Hard | QF | Arthur Ashe | 6-3 6-3 |
| 1971 | Hilton Head | Clay | 3rd/4th | Arthur Ashe | 6-3 3-6 7-6 |
| 1971 | Chicago WCT | Carpet | SF | Arthur Ashe | 6-3 6-4 |
| 1970 | US Open | Grass | R16 | Arthur Ashe | 6-4 6-7 6-2 6-3 |
| 1969 | Brussels | Clay | SF | Tom Okker | 6-4 6-1 6-0 |
| 1968 | US Open | Grass | F | Arthur Ashe | 14-12 5-7 6-3 3-6 6-3 |
| 1968 | Wimbledon | Grass | QF | Arthur Ashe | 7-9 9-7 9-7 6-2 |
| 1968 | Queen's Club | Grass | R64 | Tom Okker | 1-6 6-3 6-4 |
| 1968 | Philadelphia | Carpet | QF | Arthur Ashe | 7-5 11-9 |
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.