Buffalo Bills upset Chicago Bears, 23–20

The Bills closed as 7-point underdogs and won outright in overtime. The betting market gave them a 29% chance.

All 2014 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. Buffalo Bills 23, Chicago Bears 20

   7-point underdog29% to winOTRecap
   Upset size7
2. Carolina Panthers 20, Tampa Bay Buccaneers 14

   5.5-point underdog32% to winRecap
   Upset size5.5
3. Miami Dolphins 33, New England Patriots 20

   3.5-point underdog37% to winRecap
   Upset size3.5