DENVER -- A quick look back at how the three keys to Sunday's game turned out ...
1. PROTECT PEYTON MANNING.
This was going to be a challenge for a young offensive line against the seasoned Ravens, and the Broncos struggled in this area, allowing as many sacks in one game (four) as they did in the first four games of the 2014 season.
But keeping Manning upright doesn't just fall on the offensive line; it takes an effective running game to force the opponent to hesitate in its edge rushing. The Broncos struggled to establish the run during the first three quarters, and entered the fourth quarter with just 13 runs against 39 pass plays.