The North Texas Mean Green football team represents the University of North Texas in the sport of American Football. The Mean Green compete in the Football Bowl Subdivision (FBS) of the National Collegiate Athletics Association (NCAA) and the Sun Belt Conference. The Mean Green have attained several conference championships, including four consecutive Sun Belt Conference championships. UNT has a 51.7% winning percentage in school history, but since Hall of Fame Coach Hayden Fry left after the 1978 season, UNT's winning percentage has trended downward. From 1978 until 2005, UNT had a 41.9% winning percentage. From 1991 to 2005, the Mean Green had a 39% winning percentage. From 2005 to 2010, the team went 13-56, a 19% winning percentage.