The Diamondbacks recalled Del Castillo from Triple-A Reno on Friday.
Del Castillo held his own in the big leagues last season, slashing .313/.368/.525 over 87 plate appearances. The 25-year-old backstop has now earned another chance with the big club after posting a .945 OPS with Reno during the first half, and he's expected to work as Arizona's DH against righties until Pavin Smith (oblique) returns from the IL.