Oklahoma State upsets No. 13 Texas Tech, 24–17
It was unranked Oklahoma State taking down the No. 13 team in the AP poll.
Final24–17
Upset size6.5
Rank in 200516th of 63
It was the 2nd-biggest of 8 upsets in 2005 Week 11, and the 16th-biggest of the 2005 season. It was Oklahoma State's only upset win of 2005.
Other upsets in 2005 Week 11
South Carolina 30, 
No. 12 Florida 22Upset size7
Clemson 35, 
No. 17 Florida State 14Upset size4.5
Iowa 20, 
No. 19 Wisconsin 10Upset size3.5
No. 15 Auburn 31, 
No. 9 Georgia 30Upset size3
Iowa State 30, 
No. 22 Colorado 16Upset size2
More: Oklahoma State upsets · Texas Tech upsets · all Week 11 upsets · the 2005 season · how upset size works