Northwestern upsets No. 16 Michigan State, 39–31

It was unranked Northwestern taking down the No. 16 team in the AP poll.

It was the 8th-biggest of 16 upsets in 2017 Week 9, and the 80th-biggest of the 2017 season. It was Northwestern's only upset win of 2017.

Other upsets in 2017 Week 9

1. UNLV 26, Fresno State 16

   21.5-point underdogRecap
   Upset size21.5
2. No. 25 Iowa State 14, No. 4 TCU 7

   7-point underdogNo. 25 beat No. 4Recap
   Upset size17.5
3. Florida International 41, Marshall 30

   14.5-point underdogRecap
   Upset size14.5
4. Houston 28, No. 17 South Florida 24

   10-point underdogUnranked beat No. 17Recap
   Upset size14.5
5. UAB 30, Southern Miss 12

   11-point underdogRecap
   Upset size11

More: Northwestern upsets · Michigan State upsets · all Week 9 upsets · the 2017 season · how upset size works