The guy wasn't in the minors long enough. He clearly isn't adjusted to pitching in the majors and is still ridiculously anxious.
Isn't this guy supposed to be 29 and have won the Cuban equivalent of the Cy Young award? Wasn't the big selling point on Maya that he was major league ready and didn't need much seasoning? One swallow doesn't make a summer but I think there's a reason the Nats got him instead of the other clubs. From what we've seen so far he looks like another overhyped and overpaid bum.