Dierdorf retires from broadcasting Submitted by OldSchoolWolverine on November 20th, 2013 at 12:42 PM Log in or register to post comments Former OL great Dan Dierdorf is retiring.... http://www.cbssports.com/nfl/eye-on-football/24250423/cbs-sports-dan-dierdorf-to-retire-after-2013-nfl-season MGoBoard Football