Pittsburgh Steelers upset Buffalo Bills, 23–16

The Steelers closed as 6.5-point underdogs and won outright. The betting market gave them a 29% chance.

All 2021 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. Pittsburgh Steelers 23, Buffalo Bills 16

   6.5-point underdog29% to winRecap
   Upset size6.5
2. New Orleans Saints 38, Green Bay Packers 3

   4-point underdog37% to winRecap
   Upset size4
3. Philadelphia Eagles 32, Atlanta Falcons 6

   3.5-point underdog37% to winRecap
   Upset size3.5
4. Houston Texans 37, Jacksonville Jaguars 21

   3.5-point underdog38% to winRecap
   Upset size3.5
5. Miami Dolphins 17, New England Patriots 16

   3.5-point underdog38% to winRecap
   Upset size3.5