Colts' hidden treasure: Running backs

Examining a position group that could exceed its preseason expectations:

The Colts head into training camp with a lot of holes. Even groups that might qualify as strengths have questions -- are Dwight Freeney and Robert Mathis going to fare as well playing at least some of the time as outside linebackers? Will rookie tight ends Coby Fleener and Dwayne Allen be as good as expected?

It’s not easy to pick a spot that could overachieve, but I’ve settled on running back.

I don’t love Donald Brown's body language or his inconsistencies. It was understandable when the previous coaching staff lost faith in Brown. But he’s got a major fresh start and a coach in Chuck Pagano who has been touting him as an every-down back -- be that posturing or a real assessment. Delone Carter struggled to hold on to the ball last season, but he could be a solid short-yardage option if he gets a handle on that issue. (He spent the offseason rehabbing a thumb injury.) At organized team activities, rookie Vick Ballard looked like he fit in.

Should one of them falter, Mewelde Moore knows Bruce Arians’ offense from Pittsburgh and should make for a reliable safety blanket.

It will be interesting to see how roles are sorted out in camp and how well the Colts are able to run the ball and minimize the pressure off rookie quarterback Andrew Luck.