Cardinals right-hander Michael Wacha has been scratched from the Saturday start against Colorado. Marco Gonzales is set to pitch instead.
"He doesn't look right," Mike Matheny told the St. Louis Post-Dispatch about Wacha.
Wacha is coming off a poor outing against Cincinnati in which he surrendered five earned runs in four innings. He has made just two starts since returning from a shoulder injury that sidelined him for nearly three months.