Gibson was optioned to the Orioles' Spring Training Complex after Wednesday's doubleheader against the Blue Jays.
Gibson pitched 6.2 scoreless innings, allowing three hits and two walks while striking out seven on his way to win in the team's 4-2 victory over Toronto in the nightcap of Wednesday's doubleheader. He will now end his season having produced a 6.13 ERA and 1.71 WHIP with 37 strikeouts over 39.2 innings in nine appearances, including eight starts, with Baltimore this season.