Head to head
1
Hard
2
2
Clay
1
0
Grass
1
1
Carpet
3
Ismail El Shafei's wins on the left · Tom Okker's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (11)
| 1978 | Stockholm | Hard | R64 | Tom Okker | 6-3 6-7 6-4 |
| 1974 | Boston | Clay | QF | Tom Okker | 3-6 6-3 6-1 |
| 1973 | Cleveland WCT | Carpet | R32 | Ismail El Shafei | 4-6 6-2 6-1 |
| 1973 | London WCT | Carpet | R32 | Tom Okker | 6-7 6-4 6-3 |
| 1972 | Gothenburg WCT | Carpet | R16 | Tom Okker | 6-1 6-0 |
| 1972 | Washington WCT | Clay | R16 | Ismail El Shafei | 6-3 4-6 6-3 |
| 1972 | Las Vegas WCT | Hard | R16 | Tom Okker | 7-6 6-4 |
| 1972 | Hollywood WCT | Clay | R32 | Ismail El Shafei | 1-6 6-2 6-1 |
| 1970 | Vancouver | Carpet | R16 | Tom Okker | 7-6 7-6 |
| 1970 | Boston | Hard | R32 | Ismail El Shafei | 1-6 6-4 7-5 |
| 1969 | Wimbledon | Grass | R128 | Tom Okker | 6-3 10-8 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.