Head to head
0
Clay
1
2
Grass
0
John Marks's wins on the left · Dick Stockton's on the right · bar lengths share one scale
All meetings (3)
| 1979 | Adelaide | Grass | R32 | John Marks | 7-5 6-2 |
| 1978 | Wimbledon | Grass | R128 | John Marks | 6-2 9-8 7-5 |
| 1978 | Roland Garros | Clay | R64 | Dick Stockton | 6-1 6-0 7-5 |
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.