However, if the Broncos are going to make a run at history and an undefeated regular season, it's going to take improved play from their defense.
Help is on the way in the person of the best defensive player on the team.
According to Lindsay Jones of USA Today, head coach John Fox will be glad to see the third-year pro back on the field:
He's a dynamic rusher. He's one of the better ones in this league. I think most people would agree. Obviously we're real excited to get him back. We'll see what kind of football fitness he is in come Wednesday. But he creates a tough one-on-one matchup for most offenses.
It's not hard to see why Fox will be glad to have Miller back.
Grades per Pro Football Focus
Miller wasn't just Pro Football Focus' (subscription required) top 4-3 outside linebacker in the NFL last year. He was the top 4-3 outside linebacker by a ridiculous margin.
It's not hard to imagine the absence of such a player having an impact on a defense.
* Through six games
The Broncos have been stout against the run this year, ranking first in the NFL at just under 70 yards allowed per game.
However, part of that statistic is attributable to the Denver offense. Teams are forced to abandon the run in an effort to play catch-up with Manning and the Broncos.
Against the pass, it's been a different story.
Granted, some of this is just as attributable to Denver's offense as its prowess against the run. Teams that throw a lot and score a lot get thrown on a lot. It happens.
With that said, it doesn't help when your defense can't get to the quarterback. To this point in 2013, the Broncos aren't racking up sacks as well as they did in 2012.
It doesn't take Jack Del Rio to figure out the cause. Denver's leading sack master from last year (Miller) has been on the shelf, while the runner-up in that category (Elvis Dumervil) is now plying his trade in Baltimore.
The addition of Shaun Phillips has helped, but he isn't Von Miller.
Miller's return isn't a magic cure-all and his absence hasn't been the sole reason why Denver's pass defense has struggled.
Cornerback Champ Bailey saw his first game action of 2013 last week against the Jacksonville Jaguars. Middle linebacker Wesley Woodyard and defensive end Robert Ayers both missed the game with injuries.
If the Broncos are going to run that gauntlet and become the second team in NFL history to post a 16-0 regular season, they're going to need all hands on deck.
The defense will be that much better when two of those hands happen to belong to the best 4-3 rush linebacker in football.