By surface
| Surface | Geoff Masters | John Marks |
|---|---|---|
| Grass | 0 | 1 |
All meetings (1)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1975-12-21 | ATP | Sydney Outdoor | Round of 16 | Grass | John Marks | 6-7 | 6-2 | 2-6 |
| Surface | Geoff Masters | John Marks |
|---|---|---|
| Grass | 0 | 1 |
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1975-12-21 | ATP | Sydney Outdoor | Round of 16 | Grass | John Marks | 6-7 | 6-2 | 2-6 |