By surface
| Surface | Mark Cox | Dennis Ralston |
|---|---|---|
| Hard | 1 | 1 |
All meetings (2)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1971-04-18 | ATP | Charlotte | Round of 16 | Hard | Mark Cox | 7-6 | 6-1 | |||
| 1970-10-15 | ATP | Tucson | Quarterfinal | Hard | Dennis Ralston | 3-6 | 6-1 | 6-7 |