Ōza (Go) should not be confused with World Oza.
is a title in Go. The association that holds this title is the Japanese Nihon Ki-in. It is sponsored by the Nikkei newspaper.
Recently, the format for the tournament was changed to a best of five. The challenger is decided in a tournament of 16 players, other than the title player.[1] The winner's purse is ¥14 million ($173,000).[2]
| Edition | Year | Winner | Score | Runner-up |
|---|---|---|---|---|
| 1st | 1953 | 1–0 | Nobuaki Maeda | |
| 2nd | 1954 | 2–1 | Hidehiro Miyashita | |
| 3rd | 1955 | 2–1 | Toshihiro Shimamura | |
| 4th | 1956 | 2–0 | Eio Sakata | |
| 5th | 1957 | 2–0 | Dogen Handa | |
| 6th | 1958 | 2–0 | ||
| 7th | 1959 | 2–0 | Toshiro Yamabe | |
| 8th | 1960 | 2–0 | Hidehiro Miyashita | |
| 9th | 1961 | 2–1 | Kaku Takagawa | |
| 10th | 1962 | 2–0 | ||
| 11th | 1963 | 2–0 | Hosai Fujisawa | |
| 12th | 1964 | 2–0 | Takeo Kajiwara | |
| 13th | 1965 | 2–0 | Ichigen Okubo | |
| 14th | 1966 | 2–1 | Rin Kaiho | |
| 15th | 1967 | 2–0 | Shoji Hashimoto | |
| 16th | 1968 | 2–0 | Eio Sakata | |
| 17th | 1969 | 2–0 | Hideo Otake | |
| 18th | 1970 | 2–0 | Hideyuki Fujisawa | |
| 19th | 1971 | 2–0 | Shoji Hashimoto | |
| 20th | 1972 | 2–1 | Utaro Hashimoto | |
| 21st | 1973 | 2–1 | Eio Sakata | |
| 22nd | 1974 | 2–1 | Rin Kaiho | |
| 23rd | 1975 | 2–0 | Yoshio Ishida | |
| 24th | 1976 | 2–1 | Hideo Otake | |
| 25th | 1977 | 2–0 | Cho Chikun | |
| 26th | 1978 | 2–1 | Norio Kudo | |
| 27th | 1979 | 2–0 | Yoshio Ishida | |
| 28th | 1980 | 2–0 | ||
| 29th | 1981 | 2–1 | Masao Kato | |
| 30th | 1982 | 2–0 | Shoji Hashimoto | |
| 31st | 1983 | 2–0 | Hideo Otake | |
| 32nd | 1984 | 3–0 | Hiroshi Yamashiro | |
| 33rd | 1985 | 3–0 | Koichi Kobayashi | |
| 34th | 1986 | 3–1 | Rin Kaiho | |
| 35th | 1987 | 3–1 | Cho Chikun | |
| 36th | 1988 | 3–0 | Masaki Takemiya | |
| 37th | 1989 | 3–1 | Yasumasa Hane | |
| 38th | 1990 | 3–2 | Masao Kato | |
| 39th | 1991 | 3–1 | Yasumasa Hane | |
| 40th | 1992 | 3–2 | Koichi Kobayashi | |
| 41st | 1993 | 3–0 | Hideyuki Fujisawa | |
| 42nd | 1994 | 3–2 | Masao Kato | |
| 43rd | 1995 | 3–0 | Cho Chikun | |
| 44th | 1996 | 3–0 | O Rissei | |
| 45th | 1997 | 3–1 | Ryu Shikun | |
| 46th | 1998 | 3–0 | Kimio Yamada | |
| 47th | 1999 | 3–1 | Cho Chikun | |
| 48th | 2000 | 3–1 | ||
| 49th | 2001 | 3–0 | O Rissei | |
| 50th | 2002 | 3–2 | Cho Chikun | |
| 51st | 2003 | 3–1 | O Meien | |
| 52nd | 2004 | 3–1 | Keigo Yamashita | |
| 53rd | 2005 | 3–0 | ||
| 54th | 2006 | 3–1 | Cho U | |
| 55th | 2007 | 3–1 | Toshiya Imamura | |
| 56th | 2008 | 3–1 | Keigo Yamashita | |
| 57th | 2009 | 3–0 | Kimio Yamada | |
| 58th | 2010 | 3–0 | ||
| 2011 | 3–0 | Hane Naoki | ||
| 2012 | 3–0 | Cho U | ||
| 61st | 2013 | 3–1 | ||
| 62nd | 2014 | 3–2 | Yuta Iyama | |
| 63rd | 2015 | 3–0 | Daisuke Murakawa | |
| 64th | 2016 | 3–0 | Yo Seiki | |
| 65th | 2017 | 3–0 | Ryo Ichiriki | |
| 66th | 2018 | 3–2 | ||
| 67th | 2019 | 3–1 | Yuta Iyama | |
| 68th | 2020 | 3–1 | Kyo Kagen (Hsu Chia Yuan) | |
| 69th | 2021 | 3–2 | Shibano Toramaru | |
| 70th | 2022 | 3–0 | Yo Seiki | |
| 71st | 2023 | 3–2 | Yo Seiki |