There aren't many positions on a football team where the fourth man on the depth chart sees the field. But running back is one of them. For now, it looks like the top three on the depth chart are going to be Roy Helu, Rex Burkhead, and Dontrayevous Robinson. Lester Ward might have been considered the fourth back a year ago as he tallied ten carries for 38 yards in five appearances. Or it might have been Marcus Mendoza, who appeared in seven games and had seven receptions to go with four carries for a combined 55 yards. Mendoza is now practicing as a defensive back. So the battle for fourth might now be between Ward, Collins Okafor and walk-on Austin Jones. With top prospect Braylon Heard set to arrive in the fall though, the fourth back will need to show something if he wants to stay in...

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