Did the WBC erase his ability to keep the ball down and throw strikes?
maybe. supposedly he was throwing all out in March. I mean usually pitchers are just starting to throw at that point. instead he was pitching in games that were equivalent to playoff games in freaking March.
If I were the Nats I would not let a pitcher participate in the WBC ever again. We lost two good relievers because of it (Ayala + Rivera).
