New York Giants upset Detroit Lions, 23–20

The Giants closed as 9.5-point underdogs and won outright in overtime. The betting market gave them a 20% chance.

All 2013 NFL Week 16 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. New York Giants 23, Detroit Lions 20

   9.5-point underdog20% to winOTRecap
   Upset size9.5
2. Arizona Cardinals 17, Seattle Seahawks 10

   8-point underdog21% to winRecap
   Upset size8
3. Indianapolis Colts 23, Kansas City Chiefs 7

   7.5-point underdog24% to winRecap
   Upset size7.5