Orel Hershiser
In today's world where everyone seems to throw 100 MPH Orel Hershiser probably wouldn't get drafted. Bulldog, the nickname Tommy Lasorda gave him during his Dodger days, did not overpower hitters, he used brains over brawn.
His constant ability to use multiple pitches, arm angles, and velocities to bluff hitters made him a tough pitcher to face. This thinking man's ability he later used in his later career choice as a professional poker player.