I wondered if maybe the last Saturday's game sealed the deal since I know Sparty was recruiting him, but according to the comments, he committed at the Rutgers game and just went public today.

http://www.elevenwarriors.com/ohio-state-football-recruiting/2014/11/43773/four-star-class-of-2016-defensive-end-jonathon-cooper-commits-to-ohio-state