During the 2020 NFL season, the Buffalo Bills jumped from middling to elite offensively. They went from averaging 19.6 points in 2019 to 31.3 last year in large part thanks to the addition of wideout Stefon Diggs and improvement of quarterback Josh Allen.

Which teams could follow in the Bills' footsteps in 2021?

Between big-name additions, players returning from injuries and internal development, a handful of teams seem poised to make dramatic offensive leaps this season. We've ranked them here based on the size of their projected jump.

5. Washington Football Team

The Washington Football Team was a mess under center in 2020, starting Alex Smith (six games), Dwayne Haskins (six) and Kyle Allen (four) in the regular season and Taylor Heinicke in the playoffs.