The Bills are coming together as an elite team with their defense playing much better. 
Buffalo was very strong defensively the previous three seasons. However the Bills began this year slowly giving up 26.5 points during their first 10 games. But following their Week 11 bye, the Bills have yielded 18.7 points in their last three games. Denver has scored 21 or fewer points in six of Drew Lock's last nine starts. Lock has been picked off 13 times during this span. 
Josh Allen has turned the corner in this his third NFL season. He has accounted for 35 TD's proving to be both a throwing and running threat. The Broncos are without their best pass rusher, Von Miller, and have a cluster injury problem in their secondary minus their two top cornerbacks, suspended A.J. Bouye, and injured Bryce Callahan. Denver also is without injured cornerback Duke Dawson.