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Penn State running back Zach Zwinak runs a drill during spring... News PhotoAmerican Football - Sport,Horizontal,NCAA,NCAA College Football,Penn State Nittany Lions,Pennsylvania State University,Practicing,Running Back,Sport,Sports Training,Sports Training Drill,USAPhotographer Collection: Tribune News Service 2014 MCTPenn State running back Zach Zwinak runs a drill during spring practice on Saturday, April 5, 2014, at Holuba Hall in University Park, Pa. (Abby Drey/Centre Daily Times/MCT via Getty Images)