01/15/2010 - Under Armour Pre-Season All-America - 2010 Challis is a tall, lean, athletic, OF with a solid set of baseball skills. In the OF, Challis has a quick 1st step and he tracks the ball nicely. His glove is in a good spot when he catches it, and he works well through ground balls. Challis has a long, loose arm that is accurate to his target. Added arm strength through long toss is recommended for Challis to improve defensively. At the plate, Challis has good balance and bat speed. He has a level swing path, hits against his front side, and makes good contact. Better extension to and through the ball, along with more use of his lower 1/2 should help hitting number further improve.