Indianapolis Colts running back Trent Richardson sits on the bench at the end of the second half of an NFL football game against the New England Patriots in Indianapolis, Sunday, Nov. 16, 2014. The Patriots defeated the Colts 42-20. (AP Photo/Darron Cummings)

Colts desperate to crank up rushing game

Trent Richardson viewed the Colts running game as a three-man threat, right up until fellow running back Ahmad Bradshaw was placed on injure…