From BHGP:
In the last ten seasons, Iowa's offense has finished in the Big Ten's top five scoring offenses once, and that was with a Doak Walker Award-winning halfback in the backfield. Since 2004, Iowa's average conference rank in both scoring offense and total offense has been seventh. There was the disastrous 2007 season, when a young offense finished last in the conference in every relevant offensive statistic. There was 2009, when Iowa won eleven games and an Orange Bowl despite finishing tenth in the conference in scoring and total offense (and, yes, ESPN guy, there was quite deserved criticism that year). There was mediocrity everywhere else.
His playcalling was somehow both completely inexplicable and endlessly predictable. He had a tendency to take a gimmick -- the bubble screen, the throwback screen, most recently the end around -- and run it into the ground. He would take a simple concept and strip out the thing that made it effective in the first place (the multiple-formation no-huddle that Iowa used early this season is a prime example; for reasons passing understanding, Iowa took the no-huddle offense to Penn State and ran every play from the same three-wide formation, so that Penn State's defense was not stuck with inappropriate personnel packages for defensing the offense). There was a playbook so limited that Iowa was reduced to drawing a slant pattern in the dirt at the end of the 2009 Michigan State game because there wasn't a slant in that week's playbook.
