Head to head
0
Hard
1
1
Clay
2
1
Carpet
0
Onny Parun's wins on the left · Juan Gisbert Sr's on the right · bar lengths share one scale
All meetings (5)
| 1974 | Washington-2 | Clay | R16 | Onny Parun | 6-4 7-6 |
| 1974 | Tokyo WCT | Hard | SF | Juan Gisbert Sr | 3-6 6-3 6-3 |
| 1972 | Barcelona | Clay | R32 | Juan Gisbert Sr | 6-3 6-3 |
| 1972 | Washington-1 | Carpet | R32 | Onny Parun | 6-1 7-6 |
| 1970 | Barcelona | Clay | R32 | Juan Gisbert Sr | 6-1 6-3 6-0 |
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.