Head to head
Rivalry summary
Onny Parun and Jairo Velasco Sr. met 3 times on the ATP tour between 1974 and 1976. Onny Parun leads the head-to-head 3–0 against Jairo Velasco Sr.. By surface, Parun leads 3–0 on clay.
3
Clay
0
Onny Parun's wins on the left · Jairo Velasco Sr.'s on the right · bar lengths share one scale
All meetings (3)
| 1976 | Indianapolis-2 | Clay | R32 | Onny Parun | 7-6 6-4 |
| 1975 | Louisville | Clay | R64 | Onny Parun | 6-0 6-1 |
| 1974 | Kitzbuhel | Clay | SF | Onny Parun | 6-2 4-6 3-6 6-1 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.