Head to head
1
Hard
0
1
Clay
0
1
Grass
0
1
Carpet
0
Robert Lutz's wins on the left · Frank Froehling's on the right · bar lengths share one scale
All meetings (4)
| 1973 | Miami WCT | Hard | R16 | Robert Lutz | 6-3 6-4 |
| 1972 | Rotterdam WCT | Carpet | R16 | Robert Lutz | 6-0 6-2 |
| 1972 | Charlotte WCT | Clay | R32 | Robert Lutz | 6-1 6-3 |
| 1971 | Wimbledon | Grass | R128 | Robert Lutz | 8-6 8-9 4-6 6-2 12-10 |
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.