Head to head
2
Hard
1
1
Clay
0
2
Grass
1
2
Carpet
1
Marty Riessen's wins on the left · Colin Dibley's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (10)
| 1980 | Rancho Mirage | Hard | R32 | Marty Riessen | 6-3 7-5 |
| 1977 | Las Vegas | Hard | QF | Colin Dibley | 6-2 4-6 7-6 |
| 1977 | Memphis | Carpet | R64 | Colin Dibley | 6-3 3-6 7-5 |
| 1976 | Nottingham | Grass | R64 | Colin Dibley | 6-1 6-4 |
| 1975 | Los Angeles | Carpet | R64 | Marty Riessen | 6-2 6-2 |
| 1975 | Wimbledon | Grass | R64 | Marty Riessen | 9-8 6-2 6-3 |
| 1974 | Cincinnati | Carpet | SF | Marty Riessen | 6-3 6-1 |
| 1974 | Rome | Clay | R64 | Marty Riessen | 7-5 6-4 |
| 1971 | South Orange | Grass | R32 | Marty Riessen | 3-6 6-2 6-3 |
| 1970 | Durban | Hard | R32 | Marty Riessen | 8-6 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.