USA Ultimate

For over 30 years, "USA Ultimate" (also known as ultimate Frisbee) has flourished, reaching a highly competitive level, without the use of referees. In Ultimate, the honor system works. Sure, human nature rears its ugly head from time to time - just as in any sport, just as in life. Yet, one of the many beauties of Ultimate is how, even amid the most difficult of situations, utmost graciousness is allowed to meet that challenge head on. Through this balance, Ultimate players are free to demonstrate the most honorable and the most joyous sides of human nature in sport.

USA Ultimate, the national governing body for the sport of ultimate in the United States, and ESPN announced a multi-year agreement to carry the sport’s major properties – the College Championships and inaugural Triple Crown Tour, including the U.S. Open and the National Championships. The 2 Major Ultimate Leagues in North America are the American Ultimate Disc League (AUDL)
and the Major League Ultimate (MLU). (Source: USA Ultimate)