Kansas City Chiefs upset Denver Broncos, 44–24

The Chiefs closed as 9.5-point underdogs and won outright. The betting market gave them a 21% chance.

It was the biggest of 1 NFL upset in 2009 Week 17, and the 8th-biggest of the 2009 season. Kansas City Chiefs pulled off 2 other upsets in 2009.

Kansas City Chiefs’ other 2009 upsets

1. Kansas City Chiefs 27, Pittsburgh Steelers 24

   Week 1110.5-point underdog15% to winOTRecap
   Upset size10.5
2. Kansas City Chiefs 14, Washington Commanders 6

   Week 66.5-point underdog29% to winRecap
   Upset size6.5

More: Kansas City Chiefs upsets · Denver Broncos upsets · all Week 17 upsets · how upset size works