Staley was a sinker and knuckleball pitcher who won 19, 17, and 18 games for the Cardinals from 1951 to 1953. When he slipped to 7-13 in 1954, he was dealt to the Reds, then on to the Yankees, but he continued to be ineffective as a starter. When he arrived with the White Sox in 1956, his old manager, Marty Marion, converted him to relief and opened a second career for him. He and fellow reliever Turk Lown helped lead the Sox to the 1959 pennant. On September 22, he made one pitch, a game-ending double play with the bases loaded, to nail down the flag. In 1960 he led the AL with 13 wins in relief.