Head to head
0
Hard
1
1
Grass
0
0
Carpet
2
Jim McManus's wins on the left · Thomaz Koch's on the right · bar lengths share one scale
All meetings (4)
| 1970 | US Open | Grass | R64 | Jim McManus | 5-7 6-4 6-3 6-4 |
| 1970 | Caracas | Hard | QF | Thomaz Koch | 6-3 2-6 6-3 |
| 1969 | Dallas | Carpet | QF | Thomaz Koch | 1-6 6-3 6-4 |
| 1969 | Macon | Carpet | R16 | Thomaz Koch | 6-3 7-5 |
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.