According to Keith Law: Dustin Ackley and Jenrry Mejia impressive in AFL
"The most impressive arm so far has been Jenrry Mejia of the New York Mets, who was on a short pitch count but showed two above-average pitches and a chance for a third. He has a strong, thick build. The velocity comes easily, and if his command is better than what he showed on Wednesday and he can snap off that good curveball more frequently, he's a potential No. 1 or No. 2 starter. "You guys know I love me some Mejia. I have read rumors that he could be on the fast track to even make his MLB debut this season as a mid year call up for reliever or spot starter. In a system that is always picked on as barren, there is a lot more than meets the eye.