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The addition of Shonn Greene in free agency was a big surprise this offseason, but it was a smart move to balance out this rushing attack.
Jamie Harper just couldn't fulfill that role of being a bruiser to help out Johnson, and for that he was released just a few weeks ago.
Greene isn't even a minor threat to leap frog Johnson on the depth chart, but he is going to see plenty of touches to make this a successful run-first type of team.
One area the Titans should instantly improve upon with Greene's presence in the backfield is time of possession. The Titans were dead last in time of possession last season, and Greene should help the Titans eat up tough yards and hold onto the football.
It's also good to know the Titans have a solid player to turn to if Johnson does happen to struggle. Greene proved while with the Jets that he's capable of being the No.1 guy, but obviously that would be a worst-case scenario for this Titans team.