Head to head
1
Hard
1
0
Carpet
1
Haroon Rahim's wins on the left · Thomaz Koch's on the right · bar lengths share one scale
All meetings (3)
| 1975 | Cincinnati | Hard | R32 | Haroon Rahim | 6-7 6-3 7-6 |
| 1971 | Omaha | Carpet | QF | Thomaz Koch | 6-3 6-3 |
| 1970 | Los Angeles-2 | Hard | R64 | Thomaz Koch | 6-4 3-6 6-3 |
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.