Detroit Lions stun Arizona Cardinals, 30–12

The Lions closed as 13-point underdogs and won outright. The betting market gave them a 16% chance.

All 2021 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. Detroit Lions 30, Arizona Cardinals 12

   13-point underdog16% to winRecap
   Upset size13
2. New Orleans Saints 9, Tampa Bay Buccaneers 0

   11.5-point underdog19% to winRecap
   Upset size11.5
3. Houston Texans 30, Jacksonville Jaguars 16

   6-point underdog30% to winRecap
   Upset size6