After the St. Louis Cardinals found out top pitching prospect Alex Reyes would miss the entire 2017 season due to Tommy John surgery, the starting rotation seemed quite obvious. However, with guys like Luke Weaver and John Gant lurking in addition to the questions surrounding Michael Wacha and Lance Lynn‘s health, there was still quite a bit of speculation. There was also all that build-up of Trevor Rosenthal possibly starting.
In mid-March, manager Mike Matheny put all that speculation to rest by solidifying who the starting rotation will be.