Oregon State edges No. 23 California, 31–14

It was unranked Oregon State taking down the No. 23 team in the AP poll.

It was the 6th-biggest of 6 upsets in 2009 Week 10, and the 54th-biggest of the 2009 season. It was Oregon State's only upset win of 2009.

Other upsets in 2009 Week 10

1. Stanford 51, No. 7 Oregon 42

   Unranked beat No. 7Recap
   Upset size9.5
2. Northwestern 17, No. 8 Iowa 10

   Unranked beat No. 8Recap
   Upset size9
3. Navy 23, No. 19 Notre Dame 21

   Unranked beat No. 19Recap
   Upset size3.5
4. Nebraska 10, No. 20 Oklahoma 3

   Unranked beat No. 20Recap
   Upset size3
5. No. 15 Ohio State 24, No. 11 Penn State 7

   No. 15 beat No. 11Recap
   Upset size2

More: Oregon State upsets · California upsets · all Week 10 upsets · the 2009 season · how upset size works