Head to head
0
Clay
1
1
Grass
0
Tom Okker's wins on the left · Thomaz Koch's on the right · bar lengths share one scale
All meetings (2)
| 1974 | Tehran | Clay | QF | Thomaz Koch | 7-6 7-6 |
| 1974 | US Open | Grass | R32 | Tom Okker | 4-6 6-2 6-3 5-7 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.