Young Colts coming of age

The Indianapolis Colts are growing up fast.

As they near the midway point of the season, they've already doubled their victory total from 2011 and at 4-3 are suddenly talking about the playoff picture.

Nobody expected this.

How have they done it?

Most of the players in this year's rookie class - from Andrew Luck to tight ends Dwayne Allen and Coby Fleener - have become key contributors in the first half of the season.

The latest example came Sunday when unheralded running back Vick Ballard, a fifth-round pick in April, made one of this season's most spectacular plays: a twisting, 4½-yard dive that earned perfect marks from the judges and gave Indy a 19-13 overtime victory at Tennessee.