Head to head
0
Hard
1
1
Clay
1
1
Carpet
0
Onny Parun's wins on the left · Nicola Spear's on the right · bar lengths share one scale
All meetings (4)
| 1971 | Cincinnati | Clay | R64 | Nicola Spear | 7-5 6-3 |
| 1971 | Salisbury | Carpet | R64 | Onny Parun | 6-1 6-4 |
| 1970 | St. Petersburg | Clay | R16 | Onny Parun | 6-4 6-4 |
| 1969 | Salisbury | Hard | R64 | Nicola Spear | 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.