The Astros optioned Gage to Triple-A Sugar Land on Friday, Chandler Rome of The Athletic reports.
He was called up Sunday to take the place of Ryne Stanek as he went on the bereavement list. Gage made two appearances during his brief stint, throwing 2.2 scoreless innings while striking out three batters and walking one. His solid, if brief, MLB track record isn't consistent with his performance in the minors this season (6.59 ERA, 2.05 WHIP), but Gage still figures to be on the short list of potential bullpen reinforcements for Houston later this season.