From 2011 to 2020, Ohio State has beaten:

(listed by conference, with the ranking when OSU played them and the year)

ACC: #2 Clemson (2020)

XII: #14 Oklahoma (2016)

B1G: #10 Wisconsin (2011), Wisconsin (2012)*

PAC: #9 Washington (2018), #8 USC (2017), #2 Oregon (2014)

SEC: #1 Alabama (2014)

Each P5 champion beaten at least once in a 10 year span. Has this happened before?