By surface
| Surface | Thomaz Koch | Oscar Chiarella |
|---|
All meetings (1)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1971-04-04 | ATP | Davis Cup SAM QF: BRA vs BOL | Round Robin | — | Thomaz Koch | 6-1 | 6-0 | 6-1 |
| Surface | Thomaz Koch | Oscar Chiarella |
|---|
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1971-04-04 | ATP | Davis Cup SAM QF: BRA vs BOL | Round Robin | — | Thomaz Koch | 6-1 | 6-0 | 6-1 |