They hope to slip him through to the practice squad .
RB Lance Dunbar -- North Texas ' all - time leading rusher made a case for himself with 105 yards on 15 carries vs. Miami , but the Cowboys chose to keep only three running backs .
Cowboys hope to slip Lance Dunbar through to the practice squad .
RB Lance Dunbar -- North Texas ' all - time leading rusher made a case for himself with 105 yards on 15 carries vs. Miami , but the Cowboys chose to keep only three running backs .