More than I would've expected, actually. 2019-20, 2017-18 and 2013-14 all had 0 coaching changes in the Big Ten following the end of the season. 2020 is understandable with Covid; in 2018 you had Izzo, Painter, Beilein, Turgeon, McCaffery, and Collins all well entrenched, Chris Holtmann, Archie...