Head to head
1
Grass
0
1
Carpet
1
Onny Parun's wins on the left · Ion Tiriac's on the right · bar lengths share one scale
All meetings (3)
| 1974 | London WCT | Carpet | R32 | Onny Parun | 6-3 6-4 |
| 1973 | Eastbourne | Grass | R32 | Onny Parun | 6-3 6-4 |
| 1971 | Macon | Carpet | R32 | Ion Tiriac | 6-1 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.