Tadashi Oishi
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| Tadashi Oishi 7-dan | |
|---|---|
| Native name | 大石直嗣 |
| Date of Birth | 16 September 1989 |
| Place of Birth | Yao City, Osaka Prefecture |
| Teacher | Nobuo Mori 7-dan |
| Ryuo group | Group 3 |
| Junni class | B1 |
| Rank | Date |
|---|---|
| 6-kyu | 25 September 2001 |
| 4-dan | 1 April 2009 |
| 5-dan | 22 April 2013 |
| 6-dan | 15 May 2013 |
| 7-dan | 1 November 2017 |
| Term | Season | Awards |
|---|---|---|
| 41 | 2013 | Rookie of the year |