By surface
| Surface | Hiroki Koshimizu | Riki Oshima |
|---|---|---|
| Clay | 0 | 1 |
All meetings (1)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1993-07-21 | WTA | Fed Cup WG R2: DEN vs AUS | Round Robin | Clay | Michelle Jaggard Lai | 1-6 | 6-1 | 1-6 |
| Surface | Hiroki Koshimizu | Riki Oshima |
|---|---|---|
| Clay | 0 | 1 |
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1993-07-21 | WTA | Fed Cup WG R2: DEN vs AUS | Round Robin | Clay | Michelle Jaggard Lai | 1-6 | 6-1 | 1-6 |