No. 23 Illinois upsets No. 21 USC, 34–32

Illinois closed as a 6.5-point underdog and won outright. No. 23 beat No. 21 in the AP poll.

It was the 4th-biggest of 11 upsets in 2025 Week 5, and the 87th-biggest of the 2025 season. Illinois pulled off 1 other upset in 2025.

Other upsets in 2025 Week 5

1. Virginia 46, No. 8 Florida State 38

   6.5-point underdogUnranked beat No. 8Recap
   Upset size15.5
2. Virginia Tech 23, NC State 21

   10.5-point underdogRecap
   Upset size10.5
3. No. 17 Alabama 24, No. 5 Georgia 21

   No. 17 beat No. 5Recap
   Upset size8.5
4. California 28, Boston College 24

   6.5-point underdogRecap
   Upset size6.5
5. Washington State 20, Colorado State 3

   6.5-point underdogRecap
   Upset size6.5

Illinois’s other 2025 upsets

1. Illinois 30, Tennessee 28

   Bowl3-point underdogRecap
   Upset size3

More: Illinois upsets · USC upsets · all Week 5 upsets · the 2025 season · how upset size works