The 10 Best NFL Offenses From the 2015 Season

8. Buffalo Bills

Adjusted NEP/P: 0.103 (8th)
Adjusted Passing NEP/P: 0.138 (12th)
Adjusted Rushing NEP/P: 0.100 (1st)

The Buffalo Bills and their offensive success in 2015 relied heavily on their run game -- the Bills hold the distinction of being the only team in the league that called more run plays than pass plays this season. And this all shouldn't come as a surprise to anyone, as many predicted Buffalo to be a run-first team after the acquisition of LeSean McCoy from the Eagles in the offseason.

But what was a surprise for everyone was the stellar play the team got from former Baltimore Ravens backup quarterback Tyrod Taylor. While his ability to rack up yards on the ground was expected -- he rushed for 704 yards and 5 touchdowns on the year -- Taylor surpassed many people's expectations of his as a passer to rank as the 10th most efficient quarterback with at least 200 drop backs in 2015, amassing 3,035 passing yards through the air and a 20-to-6 touchdown-to-interception ratio.

All in all, this has led to the Bills owning the eighth best offense in the league with the team also scoring the 12th most points in the league with 379. Not bad for a squad many thought would have to grind out wins on the strength of their defense this preseason.