ENGLEWOOD, Colo. -- The Denver Broncos won the 2015 Super Bowl, in large part, because of their defense. Linebacker Von Miller emerged as an A-list player and won the Super Bowl MVP trophy, and the team's secondary -- the No Fly Zone -- had their own T-shirts.
The Broncos' defense was No. 1 or close to it in every category that season -- something they haven't been able to replicate in three playoff misses since.
The Broncos' offense has done more than its part to contribute to the past three seasons' records -- 9-7, 5-11, 6-10 -- but so have changes on defense.