By surface
| Surface | John Alexander | Eugenio Castigliano |
|---|---|---|
| Clay | 1 | 0 |
All meetings (1)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1968-04-22 | ATP | Naples | Quarterfinal | Clay | John Alexander | 7-5 | 11-9 |
| Surface | John Alexander | Eugenio Castigliano |
|---|---|---|
| Clay | 1 | 0 |
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1968-04-22 | ATP | Naples | Quarterfinal | Clay | John Alexander | 7-5 | 11-9 |