Head to head
2
Clay
0
1
Grass
1
0
Carpet
1
Geoff Masters's wins on the left · Onny Parun's on the right · bar lengths share one scale
All meetings (5)
| 1975 | Davis Cup EUR F: NZL vs AUS | Grass | RR | Geoff Masters | 3-6 8-10 |
| 1972 | Australian Open | Grass | R16 | Onny Parun | 7-6 3-6 6-3 7-5 |
| 1972 | Seattle | Carpet | R32 | Onny Parun | 6-3 4-6 6-3 |
| 1971 | Roland Garros | Clay | R128 | Geoff Masters | 6-4 6-2 6-2 |
| 1971 | Bournemouth | Clay | R32 | Geoff Masters | 6-8 8-6 6-4 5-7 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.