Tyler Glasnow is now 6' 8", 220 pounds and hits 96 MPH with his fastball.

The Pittsburgh Pirates have spent about $9.5 M from 2008-2012 on middle round prep pitchers. The majority of them have been the same: tall, skinny pitchers with fastballs in the 88-92 MPH range, and hopes that those velocities could increase once the pitchers started filling out their tall, skinny frames.

It's not a totally uncommon story. You don't have to go back far in draft history to find pitchers who greatly improved their stock from the point they graduated high school to the point where they were eligible for the draft as a college junior. Stephen Strasburg is probably the most famous story of a pitcher improving his stock. He went from undrafted out of high school to one of the best draft prospects eve...

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