Cincinnati Bengals upset Cleveland Browns, 27–17

The Bengals closed as 6.5-point underdogs and won outright. The betting market gave them a 26% chance.

All 2011 NFL Week 1 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. Cincinnati Bengals 27, Cleveland Browns 17

   6.5-point underdog26% to winRecap
   Upset size6.5
2. Buffalo Bills 41, Kansas City Chiefs 7

   3.5-point underdog36% to winRecap
   Upset size3.5