Mlodzinski will serve as the Pirates' opening pitcher for Tuesday's game against the Marlins, Andrew Destin of the Pittsburgh Post-Gazette reports.
Mlodzinksi's longest outing since returning from the injured list Aug. 27 has been two innings, so he'll likely work the opening frame or two before handing the ball to a bulk reliever. Joey Wentz could be a candidate to eat up innings after Mlodzinski's work is done.