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The NFL workhorse running back is dead.
Both of these teams have their main threat now that it appears rookie Mark Ingram will be the Saints No. 1, for whatever that means in Sean Payton's scheme.
Arian Foster's hamstring will have to be monitored throughout the season, because risking serious injury, like Gary Kubiak did by playing him in Week 2, isn't wise.
As the season goes on, teams with only one solid ball carrier will be exposed. Darren Sproles for New Orleans has already paid early dividends, playing even better than Reggie Bush was in his prime. If Pierre Thomas can get some of that burst back from two seasons ago, New Orleans has arguably the best three-headed monster of any NFL team.
Ben Tate, meanwhile, is healthy for his sophomore season and is showing why the Texans drafted him in the second round. If Foster is a no-go for the better part of the season, Tate can shoulder the load with the help of veteran Derrick Ward. Remember, it was just in 2008 that Ward rushed for over 1,000 yards with the New York Giants.
NFL teams don't necessarily have to be a top running team to make the Super Bowl, but the threat of run is, without question, crucial.