Good teams in the NFL have good offensive and defensive lines. Getting a push at the line of scrimmage is paramount for success. The Colts did not have that early in the season. But that all changed a couple of months ago, and now they are rolling.
Protecting Andrew Luck was the number one priority for Chris Ballard this season. He went to work in the draft to accomplish that goal. He got Quenton Nelson and Braden Smith, who are now starters. Both rookies have been great this year.
But Ballard also wanted to improve the defensive line too.