05/10/2009 - College PREP - Baltimore, MD Zach is an OF with a small, thin body that shows projection as he continues to physically mature and fill out. Foot speed is superior as indicated by his 6.73 60 time and he utilizes his quick, athletic feet well in taking proper routes and angles to track down balls, displaying outstanding range. Feet are active and aggressive in working to get behind balls to play through with momentum to his target. Defensive abilities in the OF are near above average. Arm strength is near above average displaying life, carry, and accuracy on his throws. He will benefit by getting on a strict long toss program to aid in further developing more arm strength and carry on throws. At the plate, Callahan has near above average abilities with solid average power. Setup is quiet and solid as he maintains balance throughout the swing. Hands are quick and direct to the baseball, generating bat speed. He sprays the ball to all fields and shows a solid feel for the barrel as it jumps off the bat when centered. Zach has the makings to be a solid player at the next level and will get a ton of looks from the collegiate coaches.