Even last year , during his big breakout , he averaged 3.1 yards per carry .
ALLEN PARK -- Detroit Lions tailback Theo Riddick has never been much of a rusher .
Even last year , during Theo Riddick 's big breakout , Theo Riddick averaged 3.1 yards per carry .
ALLEN PARK -- Detroit Lions tailback Theo Riddick has never been much of a rusher .