Jarrett Stidham is starting for the Broncos after Bo Nix suffered a season-ending injury.

The Denver Broncos ' biggest storyline going into the AFC championship lies squarely on backup quarterback Jarrett Stidham preparing to start a conference championship with just a week of practice. Many pundits, former players and teammates across the NFL have commented about the unprecedented situation 'Stiddy' faces.

When it comes to Sunday’s AFC Championship game between the Denver Broncos and the New England Patriots, Broncos backup quarterback Jarrett Stidham is the NFL’s mystery man. He only played in one game this year,

Jarrett Stidham could tell Bo Nix was in pain when he came to the sideline for the last time on Saturday evening against the Buffalo Bills. When Wil Lutz's field goal sailed through the uprights, it propelled the Broncos to the AFC championship game.

“This is not about myself, first of all," Jarrett Stidham said. "Obviously, my thoughts and prayers have been with Bo [Nix]."

Stidham will start in the AFC Championship Game on Sunday, marking his first playoff appearance in seven NFL seasons.

Jarrett Stidham and the Broncos are in a tough situation, as the quarterback has to step in to replace the injured Bo Nix for Sunday's AFC Championship Game.

Bo Nix would have had the best playoff Total QBR (64.7) among remaining QBs. Instead, it's Jarrett Stidham, who is yet to throw a pass this season.