| Roles | Competed in Olympic Games |
|---|---|
| Sex | Male |
| Full name | Hiroki•Kokubo |
| Used name | Hiroki•Kokubo |
| Original name | 小久保•裕紀 |
| Born | 8 October 1971 in Wakayama, Wakayama (JPN) |
| Measurements | 182 cm / 80 kg |
| Affiliations | Aoyama Gakuin University |
| NOC | Japan |
| Medals | OG |
| Gold | 0 |
| Silver | 0 |
| Bronze | 1 |
| Total | 1 |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1992 Summer Olympics | Baseball (Baseball/Softball) | JPN |
Hiroki Kokubo | |||
| Baseball, Men (Olympic) | Japan | 3 | Bronze |