1800's

1888 Michigan State
1889 Michigan State

1890 Albion
1891 Albion
1892 Olivet
1893 Michigan State
1894 Michigan State
1895 Albion
1896 Hillsdale
1897 Kalamazoo
1898 Kalamazoo
1899 Kalamazoo

1900's

1900 Albion
1901 Albion
1902 Michigan State
1903 Kalamazoo
1904 Hillsdale
1905 Albion
1906 Albion
1907 Alma
1908 Alma
1909 Albion

1910's

1910 Alma
1911 Olivet
1912 Albion
1913 Hillsdale
1914 Alma
1915 Olivet
1916 Kalamazoo
1918 Kalamazoo, Alma
1919 Kalamazoo

1920's

1920 Kalamazoo
1921 Albion
1922 Alma
1923 Alma
1924 Eastern Michigan
1925 Eastern Michigan, Alma
1926 Eastern Michigan
1927 Kalamazoo
1928 Albion
1929 Albion

1940's

1948 Hillsdale
1949 Hillsdale

1950's

1950 Albion
1951 Alma (8-2)
1952 Alma (4-2)
1953 Alma, Hope (6-2)
1954 Alma, Hope (8-2)
1955 Alma (6-1)
1956* Alma (18-2)
1957 Alma (13-1)
1958 Alma (11-3)
1959 Albion (12-2)

1960's

1960 Hillsdale (8-2)
1961 Alma (10-2)
1962 Albion (8-3)
1963 Albion, Hope (8-3)
1964 Hope (9-2)
1965 Olivet (9-3)
1966 Hope (9-3)
1967 Hope (10-1)
1968 Albion (8-3)
1969 Hope (9-2)

1970's

1970 Calvin (7-3)
1971 Calvin, Albion (8-3)
1972 Albion (8-4)
1973 Alma, Albion (9-3)
1974 Alma (9-3)
1975 Calvin (8-3)
1976 Albion (10-2)
1977 Hope (8-4)
1978 Alma (11-1)
1979 Albion (10-2)

1980's

1980 Alma, Calvin (8-4)
1981 Albion, Alma, Olivet (9-3)
1982 Albion (11-1)
1983 Alma (10-2)
1984 Calvin (11-1)
1985 Hope (9-3)
1986 Hope (9-3)
1987 Alma (10-2)
1988 Albion (9-3)
1989 Albion (9-3)

1990's

1990 Hope (11-1)
1991 Hope (10-2)
1992** Hope (12-3)
1993 Adrian, Albion (10-5)
1994 Hope (13-3)
1995 Albion (14-4)
1996 Albion (14-4)
1997 Hope (16-2)
1998 Hope (16-5)
1999 Alma, Hope (14-7)

2000's

2000 Calvin (14-4)
2001 Hope (14-4)
2002 Calvin (16-2)
2003 Hope (16-2)
2004 Albion (14-4)
2005 Adrian (16-5)
2006+ Adrian, Hope (21-7)
2007 Hope (22-6)
2008 Calvin (23-5)
2009 Adrian (25-3)

2010's

2010 Adrian (23-5)
2011 Adrian (24-4)
2012 Adrian (24-4) 
2013 Adrian, Hope (20-8)
2014 Adrian (21-7)
2015 Adrian (23-5)
2016 Adrian (24-4)
2017 Adrian (23-5)
2018 Adrian (24-4)

*doubleheader format began
**three-game series began
+ 28-game season began