Giants manager Tony Vitello said Saturday that Houser will pitch out of the bullpen going forward, Shayna Rubin of the San Francisco Chronicle reports.
Houser will exit the rotation after putting up a 7.00 ERA and 1.83 WHIP over his last five starts and failing to complete five innings in any of them. He was limited to just one inning in his most recent start Tuesday in Atlanta, though that game ended up being suspended in the second inning due to inclement weather. Houser will cede his spot in the rotation to Tyler Mahle (hamstring), who is set to return from the injured list to start Wednesday versus the Athletics.