| Roles | Competed in Olympic Games |
|---|---|
| Sex | Male |
| Full name | Seikan•Oki |
| Used name | Seikan•Oki |
| Original name | 大木•正幹 |
| Born | 14 January 1907 in ?, Miyazaki (JPN) |
| Died | 19 October 2000 in ?, Saitama (JPN) |
| Affiliations | Hosei University, Tokyo (JPN) |
| NOC | Japan |
Personal Best: 400 – 50.0 (1932).
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1932 Summer Olympics | Athletics | JPN |
Seikan Oki | |||
| 400 metres, Men (Olympic) | 6 h2 r2/4 | |||||
| 4 × 400 metres Relay, Men (Olympic) | Japan | 5 |