Head to head
1
Hard
0
3
Clay
1
0
Grass
2
1
Carpet
3
John Alexander's wins on the left · Robert Lutz's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (11)
| 1980 | Los Angeles | Hard | R64 | John Alexander | 6-1 6-7 7-6 |
| 1979 | Queen's Club | Grass | R32 | Robert Lutz | 6-2 7-6 |
| 1976 | WCT Aetna World Cup | Carpet | RR | Robert Lutz | 5-7 6-3 6-2 |
| 1975 | Boston | Clay | R16 | John Alexander | 1-6 7-6 6-3 |
| 1975 | Tokyo WCT | Carpet | SF | Robert Lutz | 6-3 6-4 |
| 1975 | Memphis WCT | Carpet | QF | John Alexander | 6-3 7-5 |
| 1972 | Charlotte WCT | Clay | R16 | John Alexander | 3-6 6-3 6-2 |
| 1972 | Houston WCT | Clay | R16 | John Alexander | 6-7 6-4 6-2 |
| 1972 | Hilton Head WCT | Clay | R16 | Robert Lutz | 6-4 3-6 7-6 |
| 1971 | Bologna WCT | Carpet | R16 | Robert Lutz | 7-5 7-5 |
| 1969 | Wimbledon | Grass | R16 | Robert Lutz | 9-7 4-6 3-6 6-4 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.