Morse was traded on Thursday from the Marlins to the Dodgers as part of a three-team deal. He was then traded by Los Angeles to the Pittsburgh for Jose Tabata on Friday. Over 53 games with Miami this season, Morse has hit .213 with four homers and 12 RBIs.
Morse will wear No. 31 for the Pirates.
Joey Nowak is a reporter for MLB.com. Follow him on Twitter at @joeynowak. This story was not subject to the approval of Major League Baseball or its clubs.