Broncos O-line is NFL's best

Louis Vasquez and Manny Ramirez have kept Peyton Manning safe in 2013. AP Photo/Paul Spinelli

When the Denver Broncos signed Ryan Clady to a five-year, $52.5 million deal, it was with the expectation he would be protecting the blind side of Peyton Manning for the foreseeable future. He was our fourth-ranked tackle in 2012, and it looked like a sound investment after Clady was beat for just one sack in Manning's first year in Denver.

Unfortunately, injury struck. The Broncos star lineman went down with a Lisfranc sprain in his left foot, ending his season. The obvious conclusion was the Denver offensive line couldn't be the same, that a drop-off from a Pro Bowl talent to a former undrafted free agent with 226 career snaps would lead to disaster for the immobile Manning.

It hasn't. And as our top five offensive lines show, the Broncos have overcome injuries to boast the league's best line.

Pro Football Focus' Top 5 Offensive Lines

1. Denver Broncos: +40.1

It wasn't just Clady that the Broncos have been missing. J.D. Walton was sidelined and the guy they had hoped would replace him, Ryan Lilja, just didn't have it in him to keep going after coming out of retirement. But the team overcame with Manny Ramirez actually providing an upgrade at the spot and currently sitting at second in our center rankings.