Stanford running back Tyler Gaffney is trading in his football helmet for a baseball cap. The would be senior running back is forgoing his final year of eligibility to play professional baseball with MLB’s Pittsburgh Pirates. Gaffney was a two-sport star at Stanford who excelled at both football and baseball. Last season on the gridiron, Gaffney scampered for 449 yards and seven touchdowns as a back-up. On the diamond, he hit .245 with 17 RBIs before being drafted in...