The Diamondbacks optioned Aguilar to Triple-A Reno on Monday.
Aguilar was dispatched to the minors to create a spot on the 28-man active roster for closer Tyler Clippard (illness), who was reinstated from the COVID-19 injured list in a corresponding move. During his week-long stint with the big club, Aguilar made three relief appearances and gave up two hits and two walks over two scoreless innings.