His first yr as AHC/OC at USC, I don’t believe he coached a 1000 yrd back b/c it was a RB by committee operation, but iirc, those mofos avg. like 5.0-6.0 ypc/each.
But,
As HC at Washington:
2009 Polk rushed for 1113 (4.9 ypc)
2010 Polk rushed for 1415 (5.4 ypc)
2011 Polk rushed for 1488 (5.1...