Head to head
0
Clay
2
1
Grass
0
0
Carpet
1
Ron Holmberg's wins on the left · Marty Riessen's on the right · bar lengths share one scale
All meetings (4)
| 1970 | Casablanca | Clay | R16 | Marty Riessen | 6-4 6-3 6-4 |
| 1969 | Portschach | Clay | RR | Marty Riessen | 6-4 6-4 |
| 1969 | Queen's Club | Grass | R32 | Ron Holmberg | 6-3 0-6 7-5 |
| 1969 | Japanese Championships | Carpet | RR | Marty Riessen | 6-3 3-6 6-5 |
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.