Top 5 position battles: No. 3 -- Backup RB Top 5 position battles: No. 3 -- Backup RB By Jason Butt May 22, 2012 at 10:40 am ET 1 min read RB Ricky Williams retiring left a void needed to be field by one of three young RBs. 2012 third rounder RB Bernard Pierce has the inside track for now. But RBs Anthony Allen and Damien Berry will compete for the spot. Allen is a downhill runner, though Pierce may fit Baltimore's system better.