By surface
| Surface | Hiroki Koshimizu | John O'Brien |
|---|---|---|
| Clay | 1 | 0 |
All meetings (1)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1997-05-06 | WTA | Fed Cup G2 RRA: DEN vs EST | Round Robin | Clay | Sofie Albinus | 3-6 | 5-7 |
| Surface | Hiroki Koshimizu | John O'Brien |
|---|---|---|
| Clay | 1 | 0 |
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1997-05-06 | WTA | Fed Cup G2 RRA: DEN vs EST | Round Robin | Clay | Sofie Albinus | 3-6 | 5-7 |