12/27/2013 - Under Armour Baseball Factory Recruiting Classic Rosas is a hardworking SS with plus makeup as he is a great team player and is very coachable. He did show on the mound for the first time at the event. He utilizes his quick feet well in his lateral movement, displaying range and attacks balls with his feet, playing through well. Hands are soft / clean but needs to present more out front to continue to improve defensive grade. Throws are accurate, flashing carry but will benefit by getting rid of the baseball quicker. At the plate, he shows a balanced setup with rhythm. Hands are loose and work through a level swing path. He shows a feel for the barrel with power numbers improving as he learns to use his lower half more. On the mound, fastball showed a range of 74-80 mph with arm side run. Breaking ball displays 11/5 shape with gradual breaking action. He shows a feel for his changeup with sink. Stock on the mound will continue to rise as he builds more arm strength through a long toss program and works to throw more strikes.