The White Sox traded Kenny Williams Jr. to the Colorado Rockies for first baseman - designated hitter Mark Tracy.
Tracy is the son of former Rockies manager Jim Tracy, who resigned after the season.
Williams Jr. batted .250 with four homers and 30 RBI for AA Birmingham in 2012. Tracy batted .264 with six homers and 24 RBI for Class A Modesto.
Ken Williams' tenure as White Sox general manager came to an end on Friday when he became the team's executive vice president. Rick Hahn moved up from assistant GM to the GM chair.