Tennessee Titans upset Indianapolis Colts, 20–17

The Titans closed as 7.5-point underdogs and won outright. The betting market gave them a 25% chance.

All 2006 NFL Week 13 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. Tennessee Titans 20, Indianapolis Colts 17

   7.5-point underdog25% to winRecap
   Upset size7.5
2. Arizona Cardinals 34, St. Louis Rams 20

   6-point underdog32% to winRecap
   Upset size6
3. Seattle Seahawks 23, Denver Broncos 20

   4.5-point underdog33% to winRecap
   Upset size4.5
4. Cleveland Browns 31, Kansas City Chiefs 28

   4-point underdog36% to winOTRecap
   Upset size4