Head to head
0
Grass
2
Armando Cornejo's wins on the left · Thomaz Koch's on the right · bar lengths share one scale
All meetings (2)
| 1974 | US Open | Grass | R128 | Thomaz Koch | 7-5 6-1 6-3 |
| 1969 | US Open | Grass | R128 | Thomaz Koch | 6-0 6-4 6-2 |
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.