Assistant to watch: Colts

Concluding our look at new assistant coaches in the AFC South who will be especially important in 2012, we turn to Indianapolis.

Harold Goodwin spent the past five years coaching the offensive line in Pittsburgh, so he’s got a close working relationship with offensive coordinator Bruce Arians, who also came to the Colts after a stint with the Steelers.

Goodwin’s overseeing a revamping of the offensive line, where only left tackle Anthony Castonzo and left guard Joe Reitz are likely to carry over from last year’s line. Three new veterans are expected to complete the line: Center Samson Satele and guard Mike McGlynn were free agent signings and right tackle Winston Justice was acquired from the Eagles in a cheap trade.

The group will be bigger and play a more physical style. Previously, under Howard Mudd and then his protégé, Pete Metzelaars, the Colts liked smaller linemen who moved especially well laterally. But the group had deteriorated, and Peyton Manning’s quick work made it look better than it was.

Can Goodwin help the new group jell and have it provide quality protection for Andrew Luck and some push for a group of unproven running backs?