Head to head
2
Hard
1
0
Clay
2
0
Grass
2
1
Carpet
4
Robert Lutz's wins on the left · Marty Riessen's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (12)
| 1981 | La Quinta | Hard | R64 | Robert Lutz | 6-3 6-4 |
| 1978 | Memphis | Carpet | R16 | Robert Lutz | 6-7 6-1 6-4 |
| 1974 | Cincinnati | Carpet | F | Marty Riessen | 7-6 7-6 |
| 1974 | Rome | Clay | R32 | Marty Riessen | 6-2 6-3 |
| 1972 | Vancouver WCT | Carpet | SF | Marty Riessen | 6-3 6-4 |
| 1972 | Louisville WCT | Clay | R16 | Marty Riessen | 6-2 6-7 6-4 |
| 1971 | Boston WCT | Hard | R16 | Marty Riessen | 6-2 6-3 |
| 1971 | Queen's Club | Grass | R32 | Marty Riessen | 9-7 3-6 7-5 |
| 1971 | Bristol WCT | Grass | R16 | Marty Riessen | 6-2 6-7 6-2 |
| 1971 | Dallas WCT | Carpet | QF | Marty Riessen | 6-2 6-4 |
| 1970 | Denver | Hard | RR | Robert Lutz | 6-3 |
| 1970 | Philadelphia | Carpet | R64 | Marty Riessen | 6-3 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.