Michigan B1G Program Loses Starter To Retirement Published February 12, 2019 Wisconsin center/guard Jon Dietzen announced his retirement due to injuries from college football: pic.twitter.com/23N0axftxy — Dietzen (@DietzenJon) February 11, 2019 In this article: Recent Posts Looks Like SEC School Has Overtaken Michigan To Flip A Top WR Committed To LSU One Of Nation’s Top Defenders Hinting A Michigan Commitment? Michigan Predicted To Flip One Of Clemson’s Top Commits OSU Starter Taking Note Of A Notable Comment Michigan Player Made After Win Last Year OSU Loses Another Top Recruit Ahead Of The Game