Head to head
1
Hard
0
2
Clay
2
1
Grass
0
4
Carpet
2
Marty Riessen's wins on the left · Mark Cox's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (12)
| 1976 | Memphis WCT | Carpet | R16 | Marty Riessen | 7-6(5) 7-6(3) |
| 1975 | Tokyo WCT | Carpet | QF | Mark Cox | 6-1 6-4 |
| 1973 | Charlotte WCT | Clay | QF | Mark Cox | 6-1 6-3 |
| 1973 | London WCT | Carpet | SF | Mark Cox | 7-5 3-6 7-5 |
| 1972 | Quebec WCT | Carpet | R16 | Marty Riessen | 6-3 7-6 |
| 1972 | Hollywood WCT | Clay | R16 | Mark Cox | 3-6 6-3 6-2 |
| 1970 | Paris | Carpet | R32 | Marty Riessen | 6-2 4-6 6-3 |
| 1970 | Newport-2 | Grass | RR | Marty Riessen | 6-4 6-1 |
| 1970 | Brussels | Clay | R16 | Marty Riessen | 6-3 6-0 6-4 |
| 1970 | London-1 | Carpet | QF | Marty Riessen | 25-27 8-6 7-5 |
| 1968 | Barranquilla | Clay | SF | Marty Riessen | 6-0 6-3 6-4 |
| 1968 | Durban-1 | Hard | QF | Marty Riessen | 6-4 6-4 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.