B1G position rankings: RB (units)
The preseason position rankings march on with the running back units in the Big Ten. If you missed the top 10 individual running backs entering 2012, check them out here. For the running back units -- and all position units, for that matter -- the strength of the starter is weighted fairly heavily. But if a team has a good starter and no proven depth behind him, it could hurt the rating a bit.
The top team here is obvious, while the next four groups all are very good.
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