59th Ōza
# 59th Ōza

The 59th Oza is one of the main Go tournaments in 2011. It began on 13 January 2011. The winner of the challenger tournament faced the title-holder Cho U.

## Challenger Tournament

| Round of 16 | Round of 16 | Quarter-finals | Quarter-finals | | Semi-finals | Semi-finals | | Final | Final |
| - | - | - | - | - | - | - | - | - | - |
| 28 April | 28 April | | | | | | |
| Hane Naoki | 1 | | | | | | |
| Hane Naoki | 1 | 30 May | 30 May | | | | | |
| Kobayashi Satoru | 0 | 30 May | 30 May | | | | |
| Kobayashi Satoru | 0 | Hane Naoki | 1 | | | | |
| 19 May | 19 May | | Hane Naoki | 1 | | | | |
| 19 May | 19 May | Cho Chikun | 0 | | | | |
| Yoda Norimoto | 0 | Cho Chikun | 0 | | | | |
| Yoda Norimoto | 0 | | | | 20 June | 20 June | | |
| Cho Chikun | 1 | | | | 20 June | 20 June | |
| Cho Chikun | 1 | | | | Hane Naoki | 1 | |
| 12 May | 12 May | | | | | Hane Naoki | 1 | |
| 12 May | 12 May | | | | Mitani Tetsuya | 0 | |
| So Yokoku | 0 | | | | Mitani Tetsuya | 0 | |
| So Yokoku | 0 | 9 June | 9 June | | | | | |
| Murakawa Daisuke | 1 | 9 June | 9 June | | | | |
| Murakawa Daisuke | 1 | Murakawa Daisuke | 0 | | | | |
| 14 April | 14 April | | Murakawa Daisuke | 0 | | | | |
| 14 April | 14 April | Mitani Tetsuya | 1 | | | | |
| Mitani Tetsuya | 1 | Mitani Tetsuya | 1 | | | | |
| Mitani Tetsuya | 1 | | | | | | | 8 September | 8 September |
| Mochizuki Kenichi | 0 | | | | | | | 8 September | 8 September |
| Mochizuki Kenichi | 0 | | | | | | | Hane Naoki | 1 |
| 14 April | 14 April | | | | | | | | Hane Naoki | 1 |
| 14 April | 14 April | | | | | | | Iyama Yuta | 0 |
| Iyama Yuta | 1 | | | | | | | Iyama Yuta | 0 |
| Iyama Yuta | 1 | 9 June | 9 June | | | | | | |
| Imamura Toshiya | 0 | 9 June | 9 June | | | | | | |
| Imamura Toshiya | 0 | Iyama Yuta | 1 | | | | | | |
| 12 May | 12 May | | Iyama Yuta | 1 | | | | | | |
| 12 May | 12 May | Nakano Yasuhiro | 0 | | | | | | |
| Matsumoto Takehisa | 0 | Nakano Yasuhiro | 0 | | | | | | |
| Matsumoto Takehisa | 0 | | | | 14 July | 14 July | | | | |
| Nakano Yasuhiro | 1 | | | | 14 July | 14 July | | | |
| Nakano Yasuhiro | 1 | | | | Iyama Yuta | 1 | | | |
| 21 April | 21 April | | | | | Iyama Yuta | 1 | | | |
| 21 April | 21 April | | | | Yamada Kimio | 0 | |
| Yamashiro Hiroshi | 0 | | | | Yamada Kimio | 0 | |
| Yamashiro Hiroshi | 0 | 19 May | 19 May | | | | | |
| Yamashita Keigo | 1 | 19 May | 19 May | | | | |
| Yamashita Keigo | 1 | Yamashita Keigo | 0 | | | | |
| 21 April | 21 April | | Yamashita Keigo | 0 | | | | |
| 21 April | 21 April | Yamada Kimio | 1 | | | | |
| Yamada Kimio | 1 | Yamada Kimio | 1 | | | | |
| Kono Rin | 0 | | | | | | |
