Leon Williams debuted on May 26, 1926, playing for the Brooklyn Robins at Ebbets Field; he played his final game on September 6, 1926, playing for the Brooklyn Robins at Ebbets Field.
Leon Brinkopf debuted on April 18, 1952 and played his final game on May 5, 1952.
Leon Brown debuted on May 19, 1976 and played his final game on October 3, 1976.
Leon Roberts debuted on September 3, 1974, playing for the Detroit Tigers at Tiger Stadium; he played his final game on September 30, 1984, playing for the Kansas City Royals at Royals Stadium.
Leon Brown debuted on May 19, 1976, playing for the New York Mets at Shea Stadium; he played his final game on October 3, 1976, playing for the New York Mets at Shea Stadium.
Leon Culberson debuted on May 16, 1943, playing for the Boston Red Sox at Fenway Park II; he played his final game on May 12, 1948, playing for the Washington Senators at Griffith Stadium I.
Leon Brinkopf debuted on April 18, 1952 and played his final game on May 5, 1952.
Leon Brown debuted on May 19, 1976 and played his final game on October 3, 1976.
Leon Cadore debuted on April 28, 1915 and played his final game on August 10, 1924.
Leon Carlson debuted on May 31, 1920 and played his final game on June 15, 1920.
Leon Chagnon debuted on October 5, 1929 and played his final game on August 8, 1935.
Leon Culberson debuted on May 16, 1943 and played his final game on May 12, 1948.
Leon Durham debuted on May 27, 1980 and played his final game on September 17, 1989.
Leon Everitt debuted on April 21, 1969 and played his final game on May 13, 1969.
Jorge De Leon debuted on August 9, 2013 and played his final game on September 29, 2013.
NFL player Leon Hall played for Michigan.
NFL player Leon Washington played for Florida State.
NFL player Leon McFadden played for San Diego State.