The Astros optioned Santa to Triple-A Sugar Land on Monday, Matt Kawahara of the Houston Chronicle reports.
Santa has made eight relief appearances for Houston this season, giving up five runs (one earned) with an 8:5 KK:B over 12.2 frames. He had pitched both of the previous two days, so the Astros are sending Santa down in favor of a fresh bullpen arm in Jayden Murray, who was recalled from Sugar Land.