Head to head
4
Clay
1
Jairo Velasco Sr.'s wins on the left · Ivan Molina's on the right · bar lengths share one scale
All meetings (5)
| 1980 | Quito | Clay | R32 | Jairo Velasco Sr. | 6-4 6-4 |
| 1978 | Bogota | Clay | R16 | Jairo Velasco Sr. | 4-6 1-0 RET |
| 1976 | Madrid-1 | Clay | R16 | Jairo Velasco Sr. | 7-6 7-6 |
| 1975 | Gstaad | Clay | QF | Jairo Velasco Sr. | 6-0 6-1 |
| 1975 | Nice | Clay | QF | Ivan Molina | 6-2 6-3 |
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.