Keith Marshall is this year’s first to break 4.3 seconds in the 40

Georgia running back Keith Marshall is putting on a show at the Scouting Combine. Marshall, who impressed in the weight room yesterday with 25 reps in the 225-pound bench press, impressed on the field today with his 40-yard dash. With an unofficial time of 4.29 seconds, Marshall became this year’s first player to break 4.3…