NFL

The 20 Best NFL Passing Seasons in the Last 25 Years

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5. Peyton Manning, Denver Broncos (2013)

Years removed from his time with the Colts, Manning posted another season of more than 8.03 ANY/A -- this time with the Denver Broncos. In this, his second season with the team, the 37-year-old passed for 5,477 yards and 55 touchdowns.

Manning averaged a league-best 8.87 ANY/A and accumulated a passer rating of 115.1. He won the MVP, but his team came up short in a Super Bowl matchup with the Seattle Seahawks.