Head to head
1
Clay
1
0
Grass
1
John Marks's wins on the left · Dick Crealy's on the right · bar lengths share one scale
All meetings (3)
| 1978 | Roland Garros | Clay | R128 | John Marks | 6-3 6-1 4-6 6-3 |
| 1976 | Manila | Clay | R64 | Dick Crealy | 6-0 6-0 |
| 1976 | Brisbane | Grass | R32 | Dick Crealy | 6-3 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.