Head to head
1
Clay
0
1
Grass
0
1
Carpet
0
Thomaz Koch's wins on the left · Patricio Cornejo's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (6)
| 1975 | St. Louis WCT | Carpet | R32 | Thomaz Koch | 6-2 7-5 |
| 1974 | Tehran | Clay | R32 | Thomaz Koch | 7-5 6-4 |
| 1971 | US Open | Grass | R128 | Thomaz Koch | 3-6 7-6 6-2 7-6 |
| 1971 | Davis Cup SAM F: CHI vs BRA | RR | Thomaz Koch | 4-6 6-2 5-7 8-6 6-2 | |
| 1970 | Davis Cup SAM SF: BRA vs CHI | RR | Thomaz Koch | 1-6 3-6 6-2 6-2 6-1 | |
| 1969 | Davis Cup SAM F: CHI vs BRA | RR | Thomaz Koch | 7-5 6-3 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.