By surface
| Surface | Hiroki Koshimizu | John Jorgeson |
|---|
All meetings (1)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1991-07-22 | WTA | Fed Cup WG R1: CAN vs DEN | Round Robin | — | Patricia Hy Boulais | 5-7 | 1-6 |
| Surface | Hiroki Koshimizu | John Jorgeson |
|---|
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1991-07-22 | WTA | Fed Cup WG R1: CAN vs DEN | Round Robin | — | Patricia Hy Boulais | 5-7 | 1-6 |