Head to head
2
Clay
0
1
Grass
0
Onny Parun's wins on the left · Fred McNair IV's on the right · bar lengths share one scale
All meetings (3)
| 1975 | Rome | Clay | R32 | Onny Parun | 6-4 6-7 6-1 |
| 1974 | Bournemouth | Clay | R64 | Onny Parun | 6-2 3-6 6-1 |
| 1971 | US Open | Grass | R64 | Onny Parun | 6-4 4-6 4-6 6-2 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.