Head to head
1
Hard
0
2
Clay
0
1
Grass
1
1
Carpet
0
Onny Parun's wins on the left · Sherwood Stewart's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (6)
| 1975 | Indianapolis | Clay | R32 | Onny Parun | 6-4 7-5 |
| 1975 | Bologna WCT | Carpet | R32 | Onny Parun | 6-3 7-5 |
| 1974 | Sydney-2 | Hard | R32 | Onny Parun | 5-7 7-6 6-4 |
| 1974 | South Orange | Grass | R16 | Sherwood Stewart | 3-6 6-3 6-2 |
| 1974 | Washington-2 | Clay | R32 | Onny Parun | 6-4 6-2 |
| 1971 | US Open | Grass | R128 | Onny Parun | 6-3 3-6 6-2 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.