Head to head
1
Clay
0
0
Grass
1
2
Carpet
0
Erik Van Dillen's wins on the left · Ismail El Shafei's on the right · bar lengths share one scale
All meetings (4)
| 1978 | Birmingham-2 | Grass | R16 | Ismail El Shafei | 6-4 6-4 |
| 1976 | Barcelona WCT | Carpet | R16 | Erik Van Dillen | 6-3 6-4 |
| 1975 | Dayton | Carpet | R16 | Erik Van Dillen | 7-6 6-0 |
| 1969 | Cincinnati | Clay | R32 | Erik Van Dillen | 6-3 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.