Head to head
0
Hard
1
1
Grass
0
1
Carpet
0
Sandy Mayer's wins on the left · Onny Parun's on the right · bar lengths share one scale
All meetings (3)
| 1977 | Los Angeles-2 | Hard | R64 | Onny Parun | 7-6 6-7 6-4 |
| 1975 | Wimbledon | Grass | R32 | Sandy Mayer | 6-4 9-8 6-2 |
| 1973 | Salisbury | Carpet | R16 | Sandy Mayer | 7-6 6-1 |
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.