I ask because I honestly don’t know; when was the last time Ohio beat a ranked opponent in the regular season?
While I might have missed some, the wins over ranked opponents during the regular season that I could find looking through the record book:
1969-70
80-79 Purdue #13 (Home)
82-80 Ohio State #16 (Away)
1971-72
79-68 Ohio State #4 (Home)
79-70 Indiana #12 (Home)
1994-95
94-83 Virginia #14 (Away)
1998-99
61-55 Syracuse #11 (Away)