Buffalo Bills beat Kansas City Chiefs, 41–7

The Bills closed as 3.5-point underdogs and won outright. The betting market gave them a 36% chance.

It was the 2nd-biggest of 2 NFL upsets in 2011 Week 1, and the 39th-biggest of the 2011 season. Buffalo Bills pulled off 1 other upset in 2011.

Other NFL upsets in 2011 Week 1

1. Cincinnati Bengals 27, Cleveland Browns 17

   6.5-point underdog26% to winRecap
   Upset size6.5

Buffalo Bills’ other 2011 upsets

1. Buffalo Bills 34, New England Patriots 31

   Week 37-point underdog26% to winRecap
   Upset size7

More: Buffalo Bills upsets · Kansas City Chiefs upsets · all Week 1 upsets · how upset size works