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 Top Programs Are Trying To Flip An Elite Michigan Commit Former Michigan Player Seems Really Hype About Potential Kenny Dillingham Hire Agent For Five-Star Michigan Signee Seems To Indicate Their Future Michigan Loses QB To Transfer Portal Former Michigan Signee Announces Plans To Head To SEC Program