By surface
| Surface | Joaquin Loyo Mayo | Dennis Ralston |
|---|---|---|
| Grass | 0 | 3 |
All meetings (3)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1970-06-22 | ATP | Wimbledon | Round of 32 | Grass | Dennis Ralston | 0-6 | 0-6 | 1-6 | ||
| 1970-06-15 | ATP | London / Queen's Club | Round of 32 | Grass | Dennis Ralston | 6-8 | 2-6 | |||
| 1968-08-29 | ATP | US Open | Round of 32 | Grass | Dennis Ralston | 11-9 | 2-6 | 6-3 | 5-7 | 1-6 |