Head to head
1
Hard
4
1
Grass
1
0
Carpet
2
Marty Riessen's wins on the left · Tom Gorman's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (9)
| 1979 | Maui | Hard | R16 | Tom Gorman | 6-1 6-3 |
| 1975 | Nottingham | Grass | R64 | Tom Gorman | 3-6 7-5 6-4 |
| 1974 | Nottingham | Grass | QF | Marty Riessen | 6-3 9-7 |
| 1974 | Las Vegas | Hard | R16 | Marty Riessen | 7-6 6-3 |
| 1973 | Stockholm | Hard | R16 | Tom Gorman | 6-3 7-6 |
| 1972 | Los Angeles-2 | Hard | R16 | Tom Gorman | 7-5 6-7 6-2 |
| 1971 | Richmond | Carpet | R16 | Tom Gorman | 6-4 3-6 6-2 |
| 1970 | Wembley | Carpet | R32 | Tom Gorman | 8-9 9-8 7-5 |
| 1970 | Los Angeles-2 | Hard | QF | Tom Gorman | 6-2 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.