Wainwright was diagnosed with a groin strain Thursday will begin the season on the injured list, Ben Frederickson of the St. Louis Post-Dispatch reports.

EDGE Analysis

Wainwright suffered the injury Tuesday during a workout with Team USA in the World Baseball Classic. The injury is expected to sideline him for "several weeks," Cardinals manager Oliver Marmol told John Denton of MLB.com. Jake Woodford is likely to be Wainwright's rotation replacement.