ジム・リーランド
Due to the acquisition of shortstop Édgar Rentería from the Atlanta Braves during the 2007–2008 offseason, and due to his decreased mobility, Guillén initially moved to first base to start the 2008 season. However, on April 22, manager Jim Leyland announced that Guillén would be moving to third base, with Miguel Cabrera becoming the new starting first baseman.