Cardinals will keep Trevor Rosenthal in the bullpen

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Carlos Martinez will get a chance to compete for a spot in the Cardinals’ rotation next spring, but fellow hard-throwing young right-hander Trevor Rosenthal will remain in the bullpen.

Mike Matheny announced that Rosenthal will enter 2014 as the Cardinals’ closer after thriving in that role down the stretch and into the playoff this year. Overall the 23-year-old rookie threw 87 innings with a 2.28 ERA and 126/23 K/BB ratio in relief.

As we’ve seen with other young starter prospects who immediately thrive as big-league relievers it’s often hard for teams to talk themselves into changing their role following the initial success, but in Rosenthal’s case he was considered a top-50 prospect as a starter coming into 2013 and had an excellent track record in the minors.

Of course, with Michael Wacha already in the rotation and Martinez ready to join him the Cardinals have all kinds of stud young pitching to work with.