Buffalo Bills beat Baltimore Ravens, 23–20

The Bills closed as 4-point underdogs and won outright. The betting market gave them a 36% chance.

It was the biggest of 2 NFL upsets in 2013 Week 4, and the 32nd-biggest of the 2013 season. Buffalo Bills pulled off 2 other upsets in 2013.

Other NFL upsets in 2013 Week 4

1. Cleveland Browns 17, Cincinnati Bengals 6

   3.5-point underdog37% to winRecap
   Upset size3.5

Buffalo Bills’ other 2013 upsets

1. Buffalo Bills 23, Miami Dolphins 21

   Week 76-point underdog30% to winRecap
   Upset size6
2. Buffalo Bills 24, Carolina Panthers 23

   Week 23.5-point underdog37% to winRecap
   Upset size3.5

More: Buffalo Bills upsets · Baltimore Ravens upsets · all Week 4 upsets · how upset size works