Head to head
1
Grass
0
John Marks's wins on the left · Geoff Masters's on the right · bar lengths share one scale
All meetings (1)
| 1975 | Sydney-2 | Grass | R16 | John Marks | 7-6 2-6 6-2 |
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.