By surface
| Surface | Thomaz Koch | Pancho Guzman |
|---|---|---|
| Clay | 1 | 0 |
All meetings (1)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1971-04-16 | ATP | Davis Cup SAM SF: BRA vs ECU | Round Robin | Clay | Thomaz Koch | 6-4 | 6-4 | 5-7 | 6-2 |
| Surface | Thomaz Koch | Pancho Guzman |
|---|---|---|
| Clay | 1 | 0 |
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1971-04-16 | ATP | Davis Cup SAM SF: BRA vs ECU | Round Robin | Clay | Thomaz Koch | 6-4 | 6-4 | 5-7 | 6-2 |