Tokyo Big6 Baseball League

Tokyo Big Six University League is the most prominent collegiate league in Japan. In 1903, Waseda University and Keio University started to hold a regular tournament - the "Keio–Waseda rivalry". Hosei University joined the league in 1916, Meiji University joined in 1917 and Rikkyo University joined in 1921. The League welcomed its last member - the University of Tokyo in 1925. The Spring Champion would represent the League to attend the All-Japan University Baseball Championship Series, and the Fall Champion would earn a spot for the Meiji Jingu Baseball Convention.

2024 Schools

• Waseda University
• Keio University
• Hosei University
• Meiji University
• Rikkyo University
• University of Tokyo

Conference Baseball Champions

Year	Spring Champion	Fall Champion	Notes
1927	Keio University	Meiji University
1928	Meiji University	Keio University
1929	Keio University	Waseda University
1930	Keio University	Hosei University
1931	Keio University	Rikkyo University
1932	Keio University	Hosei University
1933	Rikkyo University
1934	Hosei University
1935	Hosei University	Waseda University
1936	Meiji University	Waseda University
1937	Meiji University	Meiji University
1938	Meiji University	Meiji University
1939	Waseda University	Keio University
1940	Keio, Meiji, Rikkyo	Meiji University
1941	Hosei University	Waseda University
1942	Meiji University	Waseda University
1943	Season cancelled due to World War II
1944	Season cancelled due to World War II
1945	Season cancelled due to World War II
1946	Keio University	Waseda University
1947	Keio University	Keio University
1948	Waseda University	Hosei University
1949	Waseda University	Keio University
1950	Waseda University	Waseda University
1951	Waseda University	Keio University
1952	Keio University	Waseda University	Won All-Japan Series
1953	Rikkyo University	Meiji University	Won All-Japan Series
1954	Meiji University	Waseda University	Won All-Japan Series
1955	Meiji University	Waseda University	Won All-Japan Series
1956	Waseda University	Keio University
1957	Rikkyo University	Rikkyo University	Won All-Japan Series
1958	Rikkyo University	Rikkyo University	Won All-Japan Series
1959	Waseda University	Rikkyo University	Won All-Japan Series
1960	Hosei University	Waseda University	Won All-Japan Series
1961	Meiji University	Hosei University
1962	Hosei University	Keio University	Won All-Japan Series
1963	Keio University	Hosei University	Won All-Japan Series
1964	Waseda University	Keio University
1965	Hosei University	Waseda University
1966	Rikkyo University	Waseda University
1967	Keio University	Hosei University
1968	Hosei University	Waseda University	Won All-Japan Series
1969	Meiji University	Hosei University
1970	Hosei University	Hosei University
1971	Hosei University	Keio University
1972	Keio University	Keio University
1973	Waseda University	Meiji University
1974	Waseda University	Hosei University	Won All-Japan Series
1975	Meiji University	Meiji University	Won Meiji-Jingu Tournament
1976	Hosei University	Hosei University	Won Meiji-Jingu Tournament
1977	Hosei University	Hosei University	Won Meiji-Jingu Tournament
1978	Meiji University	Waseda University	Won All-Japan Series
1979	Waseda University	Meiji University	Won Meiji-Jingu Tournament
1980	Meiji University	Hosei University	Won All-Japan Series
1981	Meiji University	Hosei University	Won All-Japan Series, Meiji-Jingu Tournament
1982	Hosei University	Waseda University	Won All-Japan Series
1983	Meiji University	Hosei University
1984	Hosei University	Keio University	Won All-Japan Series
1985	Hosei University	Meiji University	Won All-Japan Series, Meiji-Jingu Tournament
1986	Hosei University	Meiji University
1987	Keio University	Hosei University	Won All-Japan Series
1988	Hosei University	Hosei University
1989	Hosei University	Rikkyo University
1990	Waseda University	Rikkyo University
1991	Keio University	Keio University
1992	Meiji University	Keio University	Won Meiji-Jingu Tournament
1993	Meiji University	Waseda University
1994	Meiji University	Hosei University
1995	Hosei University	Meiji University	Won All-Japan Series, Meiji-Jingu Tournament
1996	Hosei University	Meiji University	Won Meiji-Jingu Tournament
1997	Keio University	Hosei University
1998	Meiji University	Hosei University
1999	Waseda University	Rikkyo University
2000	Hosei University	Keio University	Won Meiji-Jingu Tournament
2001	Hosei University	Keio University
2002	Waseda University	Waseda University
2003	Waseda University	Waseda University
2004	Meiji University	Keio University
2005	Waseda University	Hosei University
2006	Hosei University	Waseda University
2007	Waseda University	Waseda University	Won All-Japan Series
2008	Meiji University	Waseda University
2009	Hosei University	Meiji University	Won All-Japan Series
2010	Keio University	Waseda University	Won Meiji-Jingu Tournament
2011	Keio University	Meiji University	Won Meiji-Jingu Tournament
2012	Waseda University	Hosei University
2013	Meiji University	Meiji University
2014	Keio University	Meiji University
2015	Waseda University	Waseda University
2016	Meiji University	Meiji University	Won Meiji-Jingu Tournament
2017	Rikkyo University	Keio University	Won All-Japan Series
2018	Keio University	Hosei University
2019	Meiji University	Keio University	Won All-Japan Series, Meiji-Jingu Tournament
2020	Hosei University	Waseda University
2021	Keio University	Keio University	Won All-Japan Series
2022	Meiji University	Meiji University	Won Meiji-Jingu Tournament
2023	Meiji University	Keio University	Won Meiji-Jingu Tournament
2024	Waseda University