Head to head
0
Hard
1
1
Clay
0
0
Grass
1
Graham Stilwell's wins on the left · Onny Parun's on the right · bar lengths share one scale
All meetings (3)
| 1975 | Stockholm-2 | Hard | R16 | Onny Parun | 5-7 6-4 6-3 |
| 1973 | Bournemouth | Clay | R64 | Graham Stilwell | 6-1 6-3 |
| 1968 | Auckland | Grass | SF | Onny Parun | 3-6 6-3 6-4 3-6 6-3 |
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.