The Buckeyes aren't dogs very often but when they are, they come to play. Off the top of my head...

2003 Natl Championship - Ohio State 11 pt underdogs, won by 7

2010 Rose Bowl - Ohio State 5 pt underdogs, won by 9

2014 at MSU - Ohio State 3 pt underdogs, won by 12

2014 B1G Championship Game - Ohio State 4 pt underdogs, won by FIFTY-NINE!

Underestimate the Bucks at your peril.