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Lynne Sladky/Associated Press

The NFL is far different today than the league everyone remembers from just three months ago.

The Denver Broncos are still the reigning world champions, but their roster is drastically different compared to the one that took the field against the Carolina Panthers in Super Bowl 50.

Peyton Manning officially retired.

Malik Jackson, Danny Trevathan, Evan Mathis, David Bruton Jr. and Ryan Harris were all key contributors who can now be found on other rosters.

Even Brock Osweiler—the supposed quarterback of the future—didn't want to stay in the Mile High City and chose to sign with the Houston Texans instead of taking the reins of a Super Bowl-caliber franchise.

The Broncos situation serves as a microcosm of the changes seen across the league. Teams combined to spend over $1 billion in free agency. The 2016 NFL draft further differentiated the talent pool.

Thus, what everyone came to know by the end of the 2015 campaign no longer applies.

To make sense of it all, eight Bleacher Report NFL writers—Gary Davenport, Mike Freeman, Brad Gagnon, Matt Miller, Ty Schalter, Mike Tanier, Sean Tomlinson and myself—determined which teams are currently the best and the worst the NFL has to offer.

To build a consensus for these power rankings, each squad's ranking from each writer was added to the others. The lowest totals indicated the best teams, while the highest totals marked the other end of the spectrum. If there was a tie, the club with the single highest vote got the nod as the better squad.

Forget what you thought you knew, because it's a new day in professional football.