Ken Rosenthal had this to say about Dan Meyer:

 Two executives express concern that A's LHP Dan Meyer, the team's biggest prize in the Tim Hudson trade, lacks an above-average pitch, but a scout who is familiar with Meyer says his biggest problem this spring has been a lack of command. Scouting reports say that Meyer throws 91 to 93 mph season with a hard slider and above-average changeup, but one executive had him at 86 with a "lollipop" curveball and average change in a recent Cactus League start. Another scout attributes Meyer's struggles to nerves.
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I'm going to vote for nerves, and hope he gets chilled out a bit. (that's me, not Ken Rosenthal)