Carl William Mays (November 12, 1891 – April 4, 1971) was a right-handed pitcher in Major League Baseball from 1915 to 1929.
Although he won over 200 games, 27 in 1921 alone, and was a member of four World Series-champion teams, Mays is primarily remembered for throwing the pitch that killed Ray Chapman of the Cleveland Indians on August 16, 1920.
Chapman became the only Major League player to die as a direct result of an on-field injury.