Michigan upsets No. 9 Wisconsin, 27–25
It was unranked Michigan taking down the No. 9 team in the AP poll.
Final27–25
Upset size8.5
Rank in 20085th of 70
It was the 3rd-biggest of 7 upsets in 2008 Week 5, and the 5th-biggest of the 2008 season. It was Michigan's only upset win of 2008.
Other upsets in 2008 Week 5
Oregon State 27, 
No. 1 USC 21Upset size12.5
Ole Miss 31, 
No. 4 Florida 30Upset size11
Navy 24, 
No. 16 Wake Forest 17Upset size5
Maryland 20, 
No. 20 Clemson 17Upset size3
No. 8 Alabama 41, 
No. 3 Georgia 30Upset size2.5
More: Michigan upsets · Wisconsin upsets · all Week 5 upsets · the 2008 season · how upset size works