Head to head
1
Clay
0
1
Grass
0
Onny Parun's wins on the left · Tom Edlefsen's on the right · bar lengths share one scale
All meetings (3)
| 1974 | Sao Paulo WCT | Carpet | R32 | Onny Parun | W/O |
| 1970 | South Orange | Grass | R16 | Onny Parun | 4-6 6-0 6-3 |
| 1970 | Jacksonville | Clay | QF | Onny Parun | 17-15 9-7 |
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.