Ultimate (sport)

Ultimate, originally known as ultimate frisbee, is a non-contact team field sport played with a flying disc. Points are scored by passing the disc to a teammate in the opposing end zone. Other basic rules are that players must not take steps while holding the disc, and interceptions, incomplete passes, and passes out of bounds are turnovers. Rain, wind, or occasionally other adversities can make for a testing match with rapid turnovers, heightening the pressure of play.

From its beginnings in the American counterculture of the late 1960s, ultimate has resisted empowering any referee with rule enforcement, instead relying on the sportsmanship of players and invoking the "spirit of the game" to maintain fair play. Players call their own fouls and dispute a foul only when they genuinely believe it did not occur. Playing without referees is the norm for league play, but has been supplanted in club competition by the use of "observers"/"advisers" to help in disputes, and the nascent professional leagues even employ empowered referees.