| 51st Okan Tournament | ||||
|---|---|---|---|---|
| Iwata Tatsuaki | Shida Tatsuya | Shida Tatsuya | Nakano Hironari | Yamashiro Hiroshi |
| Shida Tatsuya | ||||
| Ogata Masaki | ||||
| Nakane Naoyuki | Nakane Naoyuki | Nakano Hironari | ||
| Ida Atsushi | ||||
| Nakano Hironari | ||||
| Hikosaka Naoto | Hikosaka Naoto | Hikosaka Naoto | Yamashiro Hiroshi | |
| Yanagisawa Satoshi | ||||
| Matsuoka Hideki | ||||
| Kawada Kohei | Imamura Yoshiaki | Yamashiro Hiroshi | ||
| Imamura Yoshiaki | ||||
| Yamashiro Hiroshi | ||||
| date | black | white | result | #mv | sgf |
|---|---|---|---|---|---|
| 2010-11-25 | Hane Naoki | Yamashiro Hiroshi | W+4.5 | 242 | sgf |
Yamashiro Hiroshi regains the Okan title.