The loss of Kevin Vickerson (and Rahim Moore) may prove to be the straw that broke the camel's back.
The Broncos gave up 6.4 yards per rush against KC last week, after largely having shut down the Chiefs 2 weeks prior.
Sylvester Williams was blown back 4 yards into the endzone on a goal-line stand. He's so easy to knock off the ball, you would think he weights a buck fifty. Mitch Unrein isn't much of an upgrade over Williams.
Vickerson was the anchor of the Broncos rush defense. Without him, it will be significantly tougher to win an SB.