Head to head
0
Clay
1
0
Grass
1
2
Carpet
1
Allan Stone's wins on the left · Robert Lutz's on the right · bar lengths share one scale
All meetings (5)
| 1975 | Baltimore | Carpet | SF | Allan Stone | 7-6 6-4 |
| 1973 | Toronto WCT | Carpet | R16 | Allan Stone | 6-3 2-1 RET |
| 1972 | Denver WCT | Carpet | R16 | Robert Lutz | 7-5 6-7 6-3 |
| 1972 | Houston WCT | Clay | R32 | Robert Lutz | 3-6 6-3 6-3 |
| 1969 | Southampton | Grass | SF | Robert Lutz | 6-4 3-6 6-2 11-9 |
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.