Head to head
1
Hard
1
1
Clay
2
0
Grass
1
1
Carpet
0
Tom Gorman's wins on the left · Onny Parun's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (7)
| 1973 | Paris | Hard | R32 | Tom Gorman | 6-2 3-6 9-7 |
| 1973 | Roland Garros | Clay | R32 | Tom Gorman | 6-4 6-3 6-3 |
| 1973 | Caracas | Hard | RR | Onny Parun | 2-6 6-1 7-5 |
| 1972 | London-3 | Carpet | SF | Tom Gorman | 6-4 6-4 |
| 1972 | Roland Garros | Clay | R64 | Onny Parun | 6-3 6-3 8-6 |
| 1972 | Madrid | Clay | R32 | Onny Parun | 6-2 6-7 7-5 |
| 1969 | Haverford | Grass | QF | Onny Parun | 11-13 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.