55: Touchdown Passes
Back in 2013 — just two seasons removed from missing the entire year after undergoing a reported four neck surgeries (the fourth was left a secret) — Manning put together a season for the ages.
By passing for a league-high 55 touchdowns, the then-37-year-old set an all-time record for TD passes in a single season that still stands. A ridiculous four Broncos receivers finished the year with at least 10 receiving touchdowns with Manning at the helm: Demaryius Thomas (14), Julius Thomas (12), Eric Decker (11) and Wes Welker (10).