Originally Posted by Football Outsiders: 2012
A running back with 370 or more carries during the regular season will usually suffer either a major injury or a loss of effectiveness the following year, unless he is named Eric Dickerson. ... On average, running backs with 300 to 369 carries and no postseason appearance will see their total rushing yardage decline by 15 percent the following year and their yards per carry decline by two percent. The average running back with 370 or more regular-season carries, or 390 including the postseason, will see their rushing yardage decline by 35 percent, and their yards per carry decline by eight percent.
That being said, I think it's more a circumstance of the first two weeks and if we continue to have such run heavy performances, he won't be playing much at all at the end of the year.