Kansas City Chiefs stun Pittsburgh Steelers, 27–24

The Chiefs closed as 10.5-point underdogs and won outright in overtime. The betting market gave them a 15% chance.

All 2009 NFL Week 11 upsets, biggest first

An NFL upset is an underdog getting 3.5 or more points on the closing line winning outright. Upset size is the points it overcame. How it’s scored

1. Kansas City Chiefs 27, Pittsburgh Steelers 24

   10.5-point underdog15% to winOTRecap
   Upset size10.5
2. Oakland Raiders 20, Cincinnati Bengals 17

   9-point underdog22% to winRecap
   Upset size9
3. Tennessee Titans 20, Houston Texans 17

   4-point underdog37% to winRecap
   Upset size4
4. Miami Dolphins 24, Carolina Panthers 17

   3.5-point underdog36% to winRecap
   Upset size3.5