The Phillies transferred Song (back) to the 60-day injured list Friday.
Song has been on the 15-day injured list since the beginning of the season due to back tightness. The 25-year-old righty began facing hitters again Thursday and is expected to return relatively soon; however, placing him on the 60-day IL frees up a roster spot for Cal Stevenson, who was claimed off waivers from San Francisco on Friday.