Illinois edges No. 21 Penn State, 27–20
It was unranked Illinois taking down the No. 21 team in the AP poll.
Final27–20
Upset size2.5
Rank in 200756th of 71
It was the 7th-biggest of 8 upsets in 2007 Week 5, and the 56th-biggest of the 2007 season. Illinois pulled off 2 other upsets in 2007.
Other upsets in 2007 Week 5
Colorado 27, 
No. 3 Oklahoma 24Upset size11.5
Auburn 20, 
No. 4 Florida 17Upset size11
Kansas State 41, 
No. 7 Texas 21Upset size9.5
Maryland 34, 
No. 10 Rutgers 24Upset size8
Georgia Tech 13, 
No. 13 Clemson 3Upset size6.5
Illinois’s other 2007 upsets
Illinois 28, 
No. 1 Ohio State 21Upset size12.5- Illinois 31,
No. 5 Wisconsin 26Upset size10.5
More: Illinois upsets · Penn State upsets · all Week 5 upsets · the 2007 season · how upset size works