The depth the Cardinals have in the rotation is hardly a state secret. After veteran Adam Wainwright, the Cardinals have six young pitchers who have yet to reach arbitration, including current starters Michael Wacha, Shelby Miller, Lance Lynn, and Joe Kelly.
Also included on this list are Carlos Martinez, who has shown tantalizing promise in his brief time in the majors in the bullpen with a call to the rotation expected at some point this year, and Trevor Rosenthal, one of the best young closers in the game.
While other teams have made a concerted effort to sign young pitchers to extensions, the Cardinals have been quiet on that front.
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Source: Craig Edwards (Bleacher Report)