Head to head
0
Clay
1
1
Carpet
0
Onny Parun's wins on the left · Patricio Cornejo's on the right · bar lengths share one scale
All meetings (3)
| 1975 | Philadelphia WCT | Carpet | R128 | Onny Parun | W/O |
| 1973 | Rome | Clay | R32 | Patricio Cornejo | 6-3 6-7 6-1 |
| 1973 | Atlanta WCT | Carpet | R32 | Onny Parun | 7-6(5) 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.