Through the 2009 season, that was October 8, 1921 when Oberlin College defeated the Buckeyes, 7-6, in Columbus.
Prior to the 2011 season where they are 6-4 through 10 games that is 2004 when they went 8-4.
Before 2012 the last time Ohio State had a 7 loss season was in 1897.
2003, Ohio State has won five in a row.
October first 2011 against msu
As of the start of the 2007 season, Wisconsin and Ohio State had not played since the 2004 season. In 2004, Wisconsin defeated Ohio State 24-13.
1965 (Alabama) and 1966 (Notre Dame) they spilt the national championship and in 1962 they won it outright.
Ohio State's football record is 825-308-53 (.718) over their 118 year history
1982 Against Wisconsin
If Wisconsin defeats Michigan on November 20, 2010 it will be the first time that the Badgers have defeated both Michigan and Ohio State in a single season since 1981.
Florida State 31, Ohio State 14 in the 1998 Sugar Bowl.
Arkansas in the 2010 Sugar Bowl.
2003 in austin
In 2005 they beat #6 Ohio State. In 2002 they beat #7 Nebraska. The last top 5 team, however, was opening weekend in 1999. They beat then #4 Arizona.