Head to head
3
Clay
1
0
Carpet
2
Ismail El Shafei'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 (6)
| 1975 | Washington-2 | Clay | R32 | Ismail El Shafei | 6-1 6-3 |
| 1974 | Roland Garros | Clay | R128 | Ismail El Shafei | 7-5 6-2 |
| 1972 | Essen WCT | Carpet | SF | Robert Lutz | 7-6 6-4 |
| 1972 | Chicago WCT | Carpet | R32 | Robert Lutz | 6-3 7-5 |
| 1971 | Barcelona WCT | Clay | R32 | Robert Lutz | 6-3 6-1 |
| 1971 | Louisville WCT | Clay | R16 | Ismail El Shafei | 6-4 7-5 |
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.