College football · NFLTuesday, October 13, 2026
The Upset Report
NFL · 2017 · Week 17 · Sunday, December 31, 2017

Arizona Cardinals upset Seattle Seahawks, 26–24

The Cardinals closed as 8-point underdogs and won outright. The betting market gave them a 23% chance.

Final26–24
Upset size8
Chance to win23%
Rank in 201712th of 38

It was the 2nd-biggest of 4 NFL upsets in 2017 Week 17, and the 12th-biggest of the 2017 season. Arizona Cardinals pulled off 1 other upset in 2017.

Other NFL upsets in 2017 Week 17

  1. 8-point underdog23% to winRecap
    Upset size8
  2. 6-point underdog30% to winRecap
    Upset size6
  3. 5-point underdog32% to winRecap
    Upset size5

Arizona Cardinals’ other 2017 upsets

  1. Week 126.5-point underdog30% to winRecap
    Upset size6.5

More: Arizona Cardinals upsets · Seattle Seahawks upsets · all Week 17 upsets · how upset size works