Head to head
1
Clay
0
0
Grass
1
Onny Parun's wins on the left · Richard Russell's on the right · bar lengths share one scale
All meetings (2)
| 1971 | Jacksonville | Clay | R16 | Onny Parun | 6-3 6-4 |
| 1969 | South Orange | Grass | R64 | Richard Russell | 6-4 4-6 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.