Maybe all the minutes just finally caught up to the Hawkeyes. Iowa is the only team among the Big Ten's top five that has five players averaging more than 30 minutes per game in conference play.
See the video discussion and more here: http://espn.go.com/mens-college-basketball/powerrankings/_/season/2016/week/18
See the video discussion and more here: http://espn.go.com/mens-college-basketball/powerrankings/_/season/2016/week/18