Head to head
0
Clay
1
Jairo Velasco Sr.'s wins on the left · Thomaz Koch's on the right · bar lengths share one scale
All meetings (2)
| 1971 | Madrid | Clay | R16 | Thomaz Koch | 6-3 7-5 |
| 1969 | Davis Cup SAM SF: COL vs BRA | RR | Jairo Velasco Sr. | 3-6 6-1 6-4 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.