Smyly is scheduled to start Sunday's game at Pittsburgh, Jim Salisbury of NBC Sports Philadelphia reports.
Smyly's contract with the Phillies is still pending a physical, but assuming everything checks out he'll enter the starting rotation Sunday. The 30-year-old had an 8.42 ERA, 1.91 WHIP and 52:34 K:BB over 13 games with the Rangers prior to being released in late June.