The Denver Broncos clinched first place in the AFC West with a dramatic come-from-behind victory against the Kansas City Chiefs on October 22, 2023. The game turned in the fourth quarter when a 24-13 lead for the Chiefs transformed into a 28-24 deficit.

With just 15 seconds left, Patrick Mahomes led the Chiefs offense to the Broncos' 1-yard line. On second-and-goal, Mahomes threw the ball away after failing to locate a receiver. Kenneth Walker III was then stopped by JL Skinner on third down, setting up a crucial fourth-and-1 play.

It appeared Mahomes connected with Rashee Rice for a game-winning touchdown, but a flag for a false start on right tackle Jaylon Moore nullified the score. The penalty pushed the Chiefs back to the 6-yard line, where Mahomes was ultimately sacked by Malcolm Roach, sealing the game.

Chiefs coach Andy Reid commented on the controversial penalty, stating, "I didn't see it, but that's one man's opinion." Moore expressed uncertainty about the call, noting, "I've just got to be better."

The Chiefs' loss wasn't solely attributed to the penalty; earlier in the fourth quarter, Mahomes took an avoidable sack on third-and-2, leading Reid to opt for a 54-yard field goal attempt by Harrison Butker, which missed. This loss marked the Chiefs' second consecutive defeat, dropping their record to 5-2. Mahomes now holds an 80-3 record when leading by double digits in the fourth quarter, including playoffs.