The Angels optioned Aldegheri to Triple-A Salt Lake on Wednesday.
Aldegheri made what turned out to be just a spot start in Tuesday's 4-3 win over the White Sox, allowing two runs on four hits and two walks over four innings. He will return to the rotation at Salt Lake, where he's posted a 7.77 ERA and 23:13 K:BB over 24.1 frames this season.