The Phillies recalled Morales from Double-A Reading on Sunday.
He'll join the 26-man active roster as a replacement for Zach Eflin, who was placed on the COVID-19-related injured list in a corresponding move. Meanwhile, Cristopher Sanchez is scheduled to start the second game of Sunday's doubleheader with Mets in what amounts to a spot start in place of Eflin, but Morales could be needed to provide length out of the bullpen behind Sanchez. The 22-year-old Morales has served as a multi-inning arm out of the Reading bullpen this season, recording more than three outs in seven of his nine relief appearances while logging a 0.55 ERA, 0.75 WHIP and 28:6 K:BB across 16.1 frames.