The 2015 and 2016 seasons led to some major changes for the Buckeye offense.
Greg Studrawa was hired to be Ohio State's newest offensive line coach back in January of 2016. The move allowed Ed Warinner to focus more on his co-offensive coordinator duties alongside Tim Beck. As we all now know, the Warinner/Beck marriage proved to be downright disastrous and eventually led to Ryan Day and Kevin Wilson coming to Columbus.
Dating back to the 2016 season, only Studrawa, Tony Alford, and Larry Johnson have maintained the same roles on the coaching staff. Johnson gets all sorts of well-deserved praise for his recruiting and knack for developing NFL first-rounders.