Cardinals pitcher Adam Wainwright returned to St. Louis on Wednesday to have an MRI on his elbow, reports the St. Louis Post-Dispatch. He has a soreness similar to "tennis elbow" that's not related to the Tommy John ligament, general manager John Mozeliak said.
It's uncertain if Wainwright will make his next scheduled start Monday. He improved to 9-3 by throwing seven shutout innings Tuesday at Tampa Bay.