Arizona Cardinals beat San Francisco 49ers, 31–17

The Cardinals closed as 5.5-point underdogs and won outright. The betting market gave them a 32% chance.

It was the 5th-biggest of 5 NFL upsets in 2021 Week 9, and the 34th-biggest of the 2021 season. Arizona Cardinals pulled off 2 other upsets in 2021.

Other NFL upsets in 2021 Week 9

1. Jacksonville Jaguars 9, Buffalo Bills 6

   14.5-point underdog11% to winRecap
   Upset size14.5
2. Denver Broncos 30, Dallas Cowboys 16

   10.5-point underdog20% to winRecap
   Upset size10.5
3. Atlanta Falcons 27, New Orleans Saints 25

   7-point underdog29% to winRecap
   Upset size7
4. Tennessee Titans 28, Los Angeles Rams 16

   7-point underdog25% to winRecap
   Upset size7

Arizona Cardinals’ other 2021 upsets

1. Arizona Cardinals 25, Dallas Cowboys 22

   Week 176.5-point underdog30% to winRecap
   Upset size6.5
2. Arizona Cardinals 37, Los Angeles Rams 20

   Week 43.5-point underdog35% to winRecap
   Upset size3.5

More: Arizona Cardinals upsets · San Francisco 49ers upsets · all Week 9 upsets · how upset size works