Idaho State stuns Utah State, 29–17

Idaho State closed as a 15.5-point underdog and won outright.

It was the 3rd-biggest of 7 upsets in 2026 Week 1, and the 10th-biggest of the 2026 season. It was Idaho State's only upset win of 2026.

Other upsets in 2026 Week 1

1. Massachusetts 37, Rutgers 21

   29.5-point underdogRecap
   Upset size29.5
2. The Citadel 43, Charlotte 41

   20.5-point underdogFCS beat FBSRecap
   Upset size20.5
3. Tulsa 24, Oklahoma State 10

   13.5-point underdogRecap
   Upset size13.5
4. North Carolina 15, TCU 10

   7.5-point underdogRecap
   Upset size7.5
5. Colorado 14, Georgia Tech 13

   6.5-point underdogRecap
   Upset size6.5

More: Idaho State upsets · Utah State upsets · all Week 1 upsets · the 2026 season · how upset size works