San Diego Chargers stun Denver Broncos, 27–20

The Chargers closed as 10-point underdogs and won outright. The betting market gave them a 20% chance.

All 2013 NFL Week 15 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. San Diego Chargers 27, Denver Broncos 20

   10-point underdog20% to winRecap
   Upset size10
2. Minnesota Vikings 48, Philadelphia Eagles 30

   6.5-point underdog29% to winRecap
   Upset size6.5
3. St. Louis Rams 27, New Orleans Saints 16

   6.5-point underdog27% to winRecap
   Upset size6.5
4. Baltimore Ravens 18, Detroit Lions 16

   4.5-point underdog34% to winRecap
   Upset size4.5
5. Green Bay Packers 37, Dallas Cowboys 36

   4-point underdog35% to winRecap
   Upset size4