Kansas City Chiefs stun San Diego Chargers, 30–16

The Chiefs closed as 12-point underdogs and won outright. The betting market gave them a 13% chance.

It was the biggest of 5 NFL upsets in 2007 Week 4, and the 2nd-biggest of the 2007 season. It was Kansas City Chiefs's only upset win of 2007.

Other NFL upsets in 2007 Week 4

1. Arizona Cardinals 21, Pittsburgh Steelers 14

   5.5-point underdog32% to winRecap
   Upset size5.5
2. Buffalo Bills 17, New York Jets 14

   3.5-point underdog36% to winRecap
   Upset size3.5
3. Cleveland Browns 27, Baltimore Ravens 13

   3.5-point underdog36% to winRecap
   Upset size3.5
4. Oakland Raiders 35, Miami Dolphins 17

   3.5-point underdog36% to winRecap
   Upset size3.5

More: Kansas City Chiefs upsets · San Diego Chargers upsets · all Week 4 upsets · how upset size works