Piratespitcher Charlie Morton will begin a rehab assignment with Double-A Altoona Friday, the Pittsburgh Post-Gazette reports.

Morton, who is recovering from September labrum injury, has seen action in a simulated game but has yet to begin a rehab assignment. He went 6-12 with a 3.72 ERA and 126:57 K:BB ratio in 157 1/3 innings in 2014.