 For geographic convenience, the Big Ten named Penn State as Ohio State's new designated rival in addition to Michigan, and Illinois was set to be paired with in-state rival Northwestern and neighboring Indiana despite Ohio State's historical rivalry with Illinois.With Nebraska's entry to the Big Ten and the establishment of division play in football, Ohio State and Illinois played every season in the Leaders Division from 2011 to 2013.Michigan was the Buckeyes' permanent cross-division rival from the Legends Division.