A week ago it was reported that Adam Wainwright was going to start, probably. Now it is a fact: Adam Wainwright will start when he returns and that return will be on September 10, 2018 against the Pittsburgh Pirates. Per Joe Trezza of MLB.com:
The Cardinals are planning to activate Wainwright and slot him back into their rotation next Monday for the opener of a three-game set against the Pirates at Busch Stadium. The assignment comes on the heels of a three-week rehab stint and will mark Wainwright’s first big league appearance since May 17, when he landed on the disabled list with inflammation in the elbow.