Irwin Charles "Utz" Uteritz (July 4, 1899 – December 14, 1963) was an American athlete and coach. He played American football and baseball for the University of Michigan from 1921 to 1923. At 140 pounds, he was one of the lightest quarterbacks ever to start for a major college program. Despite his size, Michigan football coach Fielding H. Yost called him "the best field general I ever had." Uteritz led Michigan to back-to-back undefeated seasons and a national championship in 1923. He also played three years of baseball for Michigan at second base and shortstop, hit above .300 and was elected as captain of the 1923 baseball team. Uteritz later served as a football and baseball coach at Northwestern University (1924–1925), the University of Wisconsin (1925–1935), the University of Californi