Oklahoma State edges No. 25 Kansas State, 31–20

It was unranked Oklahoma State taking down the No. 25 team in the AP poll.

It was the 13th-biggest of 13 upsets in 2021 Week 4, and the 198th-biggest of the 2021 season. Oklahoma State pulled off 3 other upsets in 2021.

Other upsets in 2021 Week 4

1. Bowling Green 14, Minnesota 10

   30.5-point underdogRecap
   Upset size30.5
2. UL Monroe 29, Troy 16

   23.5-point underdogRecap
   Upset size23.5
3. NC State 27, No. 9 Clemson 21

   10.5-point underdogUnranked beat No. 9Recap
   Upset size19
4. Georgia Tech 45, No. 21 North Carolina 22

   14.5-point underdogUnranked beat No. 21Recap
   Upset size17
5. Baylor 31, No. 14 Iowa State 29

   7-point underdogUnranked beat No. 14Recap
   Upset size13

Oklahoma State’s other 2021 upsets

1. No. 12 Oklahoma State 32, No. 25 Texas 24

   Week 73.5-point underdogRecap
   Upset size3.5
2. Oklahoma State 21, Boise State 20

   Week 33.5-point underdogRecap
   Upset size3.5
3. No. 9 Oklahoma State 37, No. 5 Notre Dame 35

   BowlNo. 9 beat No. 5Recap
   Upset size2

More: Oklahoma State upsets · Kansas State upsets · all Week 4 upsets · the 2021 season · how upset size works