The rivalry between Michigan and Ohio State has been intense, but that has not prevented a few individuals from participating on both sides of the field as players or coaches.

Bo Schembechler as OSU assistant coach, 1960

Albert HerrnsteinPlayed for Michigan, 1899-1902
Head coach at Ohio State 1906-1900.
(He was one of four Herrnsteins from Chillicothe, Ohio who have played for Michigan: William H., 1898-1899, William H. Jr., 1922-1925; and John, 1955-1958.)
Chuck HeaterPlayed fullback and tailback for Michigan, 1971-1974.
Assistant coach at Ohio State, 1985-1987.
Gary MoellerA three year starter at center for Ohio, 1960-1962.
Assistant coach at Michigan, 1969-1976 and 1982-1989; head coach at Michigan 1989-1994
Chuck StobartAssistant coach at Michigan, 1969-1976
Assistant coach at Ohio State, 1995-2000
George Little Top assistant to Fielding Yost, 1922-1923 and head football coach in 1924. After graduating from Ohio Wesleyan in 1912, Little attended graduate school at Ohio and served as an assistant coach under John Wilce, 1913-1915. In 1925 he became head coach and athletic director at Wisconsin.
Bo SchembechlerHead coach at Michigan 1969-1989
Assistant coach at Ohio State, 1958-1963; graduate assistant at Ohio State, 1952.
Bo also played for Woody Hayes at Miami of Ohio, 1949-1950.
Rick BayPlayed halfback and quarterback for Michigan, 1961-1964, but did not earn a letter. Better known as a Big Ten wrestling champion and All-American.
Athletic Director at Ohio State, 1984-1987
Steve Farrell Assistant football trainer/coach and track coach at Ohio State 1909-1912
Assistant football coach/trainer, 1915-1916, and head track coach at UM, 1913-1929
J.T. White Lettered in football at both schools and played on national championship teams at both. White, who grew up in River Rouge, MI, went south to Columbus for his freshman and sophomore years and won a national title under Paul Brown in 1942. After serving in the military 1943-1946, White enrolled at Michigan, winning letters in 1946 and 1947 and was the starting center for the 1947 national champions. White was an assistant coach at Michigan 1948-1953 before moving on to Penn State.
Justin Boren A native of Pickerington OH near Columbus, Boren played at Michigan, 2006-2007, transferred to OSU, 2008-2009. His father Mike played linebacker for the Wolverines, 1980-1983.
Leo Cunningham Played at U-M 1939-1941, winning a varsity letter at tackle in 1941. During WWII military service he was assigned to OSU and won a varsity letter in 1943.