Head to head
0
Hard
1
1
Clay
0
0
Grass
1
1
Carpet
0
Onny Parun's wins on the left · Tony Roche's on the right · bar lengths share one scale
All meetings (4)
| 1976 | Washington WCT | Carpet | R16 | Onny Parun | 7-6(3) 7-6(0) |
| 1974 | Bombay | Clay | F | Onny Parun | 6-3 6-3 7-6 |
| 1974 | US Open | Grass | R64 | Tony Roche | 6-4 6-4 6-4 |
| 1970 | Salisbury | Hard | R64 | Tony Roche | 9-7 6-2 |
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.