Del Castillo (shoulder) was placed on Triple-A Reno's 7-day injured list Saturday, Alex Weiner of ArizonaSports.com reports.

EDGE Analysis

Del Castillo was diagnosed with a right shoulder strain, and he's expected to be out of action for at least a month, per Nick Piecoro of the Arizona Republic. Del Castillo was unable to crack the Diamondbacks' Opening Day roster after losing to Jose Herrera for backup duties behind Gabriel Moreno during spring training.