San Francisco 49ers beat Seattle Seahawks, 26–23

The 49ers closed as 3.5-point underdogs and won outright in overtime. The betting market gave them a 34% chance.

It was the 4th-biggest of 4 NFL upsets in 2018 Week 15, and the 36th-biggest of the 2018 season. It was San Francisco 49ers's only upset win of 2018.

Other NFL upsets in 2018 Week 15

1. Philadelphia Eagles 30, Los Angeles Rams 23

   13.5-point underdog14% to winRecap
   Upset size13.5
2. Washington Commanders 16, Jacksonville Jaguars 13

   7.5-point underdog25% to winRecap
   Upset size7.5
3. Los Angeles Chargers 29, Kansas City Chiefs 28

   3.5-point underdog36% to winRecap
   Upset size3.5

More: San Francisco 49ers upsets · Seattle Seahawks upsets · all Week 15 upsets · how upset size works