The White Sox said Hickey died Wednesday at Rush University Medical Center in Chicago. He had been hospitalized for since missing the team's workout before Opening Day. A cause of death wasn't disclosed.
A lefty, Hickey pitched with the White Sox from 1981-83 and the Orioles from 1989-91. He was 9-14 with a 3.91 ERA and 17 saves in 231 relief appearances.