Cardinals right-hander Adam Wainwright will open the season on the injured list due to a groin strain, manager Oli Marmol announced to the team’s beat this morning (Twitter link via Derrick Goold of the St. Louis Post-Dispatch). Wainwright was healthy enough to toss four innings of one-run ball for Team USA in its semi-final victory over Cuba in the World Baseball Classic earlier this week, but he suffered this new injury in the weight room two days later.