Head to head
1
Hard
0
2
Clay
0
1
Carpet
0
Tom Okker's wins on the left · Juan Gisbert Sr's on the right · bar lengths share one scale
All meetings (4)
| 1968 | Rome | Clay | QF | Tom Okker | 6-3 6-2 6-4 |
| 1968 | Davis Cup EUR R1: ESP vs NED | Clay | RR | Tom Okker | 7-5 6-3 7-5 |
| 1968 | New York-1 | Carpet | R16 | Tom Okker | 5-7 10-8 6-4 |
| 1968 | Curacao | Hard | QF | Tom Okker | 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.