Yesterday, I looked at how frequently the highest drafted rookie running back ended leading his draft class in rushing yards. Today, we’ll examine how often the best rookie running back ends up being having the most career rushing yards among the members from his class.

I performed this same exercise at wide receiver, and concluded that as great as A.J. Green was last season, the odds were stacked against him leading the 2011 rookie receiver class in career receiving yards. ^[1]From 1978 to 2008, only three of the 31 wide receivers with the best rookie seasons ended up with the most receiving yards from their class. For whatever reason, there simply is not a strong correlation between rookie performance and career performance for wide receivers. Is the same true at the running back position?

There was an eleven-year stretch from ’92 to ’02, when Ricky Watters, Jerome Bettis, Marshall Faulk, Curtis Martin, Eddie George, Corey Dillon, Fred Taylor, Edgerrin James, LaDainian Tomlinson, and Clinton Portis each led their class in rushing yards both as rookies and over the course of their careers. The lone exception came in 2000, when Mike Anderson nudged by Jamal Lewis to lead the ’00 class in rookie rushing yards, while Lewis ended with the most career rushing yards. If I had written this article a decade ago, I would have thought that unlike at the receiver position, there was an extremely strong correlation between rookie and career performance for the top running backs.

But since then, things have changed. Domanick Williams (Larry Johnson), Kevin Jones (Steven Jackson), Cadillac Williams (Frank Gore), Joseph Addai (Maurice Jones-Drew), Steve Slaton (Chris Johnson), and Knowshon Moreno (Arian Foster) led all rookies in rushing yards but have been passed in the career category by another back from the same rookie class. It’s too early to get a handle on the last two draft classes, although I certainly wouldn’t take even odds on either Ben Tate or LeGarrette Blount finishing with the most career rushing yards of any running back who entered the league in either 2010 or 2011.

The table below shows the top rookie running backs and the top career running backs from each class since 1978.
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