Giolito is expected to operate in a bulk-relief role Monday in St. Louis, with right-hander Wandy Peralta serving as the Padres' opening pitcher in the series opener, Jeff Jones of the Belleville News-Democrat reports.
Giolito has struggled since making his Padres debut May 17, posting a 4.35 ERA, 1.75 WHIP and 14:18 K:BB over 20.2 innings covering five starts. As a result of Giolito's ongoing struggles, the club will take a new approach with his turn through the rotation and send Wandy Peralta to the bump to cover the first inning or two.