Beach, Fl-Coach Don Shula is dead at age 90. Coach Shula the longtime Miami Dolphins head coach and the only NFL coach to head an undefeated NFL team died Monday according to his family. The 1972 Miami Dolphins are the only undefeated team in NFL history. The coach led the fins to a perfect 17-0 season in 1972. Shula is also the coach with the most wins in NFL history with a total of 347 NFL coaching wins. Over 33 seasons with the Baltimore Colts and Miami Dolphins,  Coach Shula put together a Hall of Fame coaching career, racking up a 347-173-6.