Mike Shanahan
Without question, Mike Shanahan is the best head coach the Broncos ever had, winning two Super Bowls with the team.
After being fired in Denver following the 2008 season, Shanahan took a year off and then returned as a head coach, being hired by Washington ahead of the 2010 season.
He had a talented team with Robert Griffin III winning the Offensive Rookie of the Year during his time there but during his final year there, he also had to face that vaunted 2013 Broncos team.
Though Manning threw three interceptions in the game and Washington actually had a 21-7 lead at one point, the Broncos came storming back to score 38 unanswered points and win the game 45-21.
Manning finished the day with 354 yards passing and four touchdowns. Shanahan will always be loved in Denver though and he was eventually elected to the team’s Ring of Fame.