By surface
| Surface | Sammy Giammalva Jr | John Hayes |
|---|---|---|
| Hard | 1 | 0 |
All meetings (1)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1981-03-23 | ATP | Napa | Quarterfinal | Hard | Sammy Giammalva Jr | 6-2 | 6-4 |
| Surface | Sammy Giammalva Jr | John Hayes |
|---|---|---|
| Hard | 1 | 0 |
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1981-03-23 | ATP | Napa | Quarterfinal | Hard | Sammy Giammalva Jr | 6-2 | 6-4 |