Head to head
1
Clay
0
1
Grass
0
Onny Parun's wins on the left · Butch Seewagen's on the right · bar lengths share one scale
All meetings (2)
| 1977 | Wimbledon | Grass | R128 | Onny Parun | 8-6 7-5 9-8 |
| 1972 | Cincinnati | Clay | R64 | Onny Parun | 6-3 6-4 |
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.