SCHOOL YEAR BASEBALL CONFERENCE CHAMPION
1954-55 Vandercook Lake
1955-56 Western
1956-57 Western
1957-58 Vandercook Lake
1958-59 Michigan Center
1959-60 Vandercook Lake
1960-61 Michigan Center
1961-62 Concord
1962-63 Michigan Center
1963-64 Michigan Center
1964-65 East Jackson (co)
1964-65 Western (co)
1965-66 Michigan Center
1966-67 Michigan Center
1967-68 Michigan Center
1968-69 Michigan Center
1969-70 Michigan Center
1970-71 Columbia Central
1971-72 Northwest
1972-73 Michigan Center
1973-74 Western
1974-75 Northwest
1975-76 Napoleon
1976-77 Grass Lake
1977-78 Grass Lake
1978-79 East Jackson
1979-80 Grass Lake
1980-81 Grass Lake
1981-82 East Jackson
1982-83 Michigan Center
1983-84 Manchester
1984-85 Napoleon
1985-86 Michigan Center
1986-87 still being researched
1987-88 Michigan Center
1988-89 Michigan Center
1989-90 Hanover Horton
1990-91 Manchester  (co)
1990-91 Grass Lake  (co)
1991-92 Grass Lake
1992-93 Grass Lake
1993-94 Napoleon
1994-95 Vandercook Lake
1995-96 Addison
1996-97 Napoleon
1997-98 Vandercook Lake
1998-99 Napoleon
1999-00 Napoleon
2000-01 Napoleon
2001-02 Vandercook Lake
2002-03 Manchester
2003-04 Michigan Center
2004-05 Michigan Center
2005-06 Michigan Center
2006-07 Michigan Center
2007-08 Grass Lake
2008-09 Michigan Center
2009-10 East Jackson  (co)
2009-10 Michigan Center  (co)
2010-11 East Jackson
2011-12 Hanover Horton
2012-13 Manchester  (co)
2012-13 Michigan Center  (co)
2013-14 Michigan Center
2014-15 Michigan Center
2015-16 Hanover Horton
2016-17 Napoleon
2017-18 Napoleon
2018-19 Michigan Center  (co)
2018-19 Napoleon  (co)
2019-20 Season Canceled
2020-21 Grass Lake, Manchester, Michigan Center

Baseball league championships (1954-2021)

Addison (1): 1996

Columbia Central (1): 1971

Concord (1): 1962

East Jackson (5): 1965t, 1979, 1982, 2010t, 2011

Hanover-Horton (3): 1990, 2012, 2016

Manchester (5): 1984, 1991t, 2003, 2013t, 2021t

Michigan Center (25): 1959, 1961, 1963, 1964, 1966, 1967, 1968, 1969, 1970, 1973, 1983, 1986, 1988, 1989, 2004, 2005, 2006, 2007, 2009, 2010t, 2013t, 2014, 2015, 2019t, 2021t

Napoleon (10): 1976, 1985, 1994, 1997, 1999, 2000, 2001, 2017, 2018, 2019t

Northwest (2): 1972, 1975

Grass Lake (9): 1977, 1978, 1980, 1981, 1991t, 1992, 1993, 2008, 2021t

Vandercook Lake (6): 1955, 1958, 1960, 1995, 1998, 2002

Western (4): 1956, 1957, 1965t, 1974