Pirates pitcher Charlie Morton will not make his scheduled start Tuesday against the Cardinals, as the game has been postponed due to rain, Jenifer Langosch of MLB.com reports.

Pittsburgh and St. Louis will play two Wednesday to make up for the rainout, and while nothing's been officially announced, it seems likely both Morton and Michael Wacha will simply move back a day. Morton held the Cardinals to one earned run over six innings in his lone start against them this season back on Sept. 5.