NFL Hall of Famer went on to become a staple college football broadcaster, doing many of Nebraska's best games over the years. His son quarterbacked the other undefeated team in 1997, Michigan. Bob is part of the 1972 Dolphin crew that celebrates every time the last undefeated NFL team loses each season. The 1972 NFL Dolphins were the only team in NFL history to go undefeated and win the Superbowl. 11 by 14 matted and autographed photo. C of A included.