Brian Spurlock-USA TODAY Sports
Andrew Luck is the Colts' biggest key to divisional dominance.
Then-Indianapolis Colts quarterback Peyton Manning's missed 2011 season was the best thing to happen to the Houston Texans. It allowed them to take hold of an AFC South that had been dominated by the Colts for years.
Manning's departure the following year to the Denver Broncos, and the Colts' drafting of Andrew Luck first overall in the draft, also managed to buy the Texans another year atop the division's ranks.
Luck's first year with the Colts—one in which the quarterback position wasn't the only thing being rebuilt—resulted in an 11-5 record, just one game back from the Texans. The Jacksonville Jaguars and Tennessee Titans, meanwhile, combined for just eight wins.
This year, that gap will remain, but the two teams at the top will swap positions. While the Texans aren't a weak team by any stretch, they need a No. 2 wide receiver to emerge to pair with Andre Johnson, and key members of their secondary are getting older.
Though strong defense can help a team win championships, the young, dynamic Colts offense should be enough to carry them to a divisional title.