Wisconsin stuns No. 13 Penn State, 24–20

Wisconsin closed as a 9.5-point underdog and won outright. It was unranked Wisconsin taking down the No. 13 team in the AP poll.

It was the 2nd-biggest of 11 upsets in 2026 Week 4, and the 9th-biggest of the 2026 season. It was Wisconsin's only upset win of 2026.

Other upsets in 2026 Week 4

1. Wake Forest 30, No. 16 Louisville 27

   11.5-point underdogUnranked beat No. 16Recap
   Upset size16.5
2. Minnesota 27, Washington 24

   12.5-point underdogRecap
   Upset size12.5
3. No. 21 Florida 52, No. 4 Ole Miss 28

   No. 21 beat No. 4Recap
   Upset size8.5
4. UAB 24, Navy 20

   6.5-point underdogRecap
   Upset size6.5
5. Cincinnati 31, Kansas State 26

   6-point underdogRecap
   Upset size6

More: Wisconsin upsets · Penn State upsets · all Week 4 upsets · the 2026 season · how upset size works