Could Bradshaw start over Richardson?

Trent Richardson didn't live up to expectations in his first year in Indianapolis, and that may be putting it nicely -- he averaged just 2.9 yards per carry and scored only three touchdowns in an otherwise solid offense.

It goes without saying, but if the Colts are going to take the next step offensively, they're going to need much more from their starting running back in 2014. Is it a foregone conclusion that Richardson will start again? Or will the starting job go to Ahmad Bradshaw?