A makeup will be announced at a later date.
The Pirates' pitching rotation will remain the same, with right-hander A.J. Burnett (0-2, 3.71) facing Cardinals right-hander Shelby Miller (2-0, 1.46) at 7:05 p.m. ET on Wednesday.
George Von Benko is a contributor to MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.