Unicycle hockey is a team sport, similar to rink hockey where players try to hit the ball with their sticks into the other team's goal, except that each player must be mounted on a unicycle to play the ball. A team is composed of five players (plus substitutes), but there is no dedicated goalkeeper role (although one player usually stays back in that position). The governing body for unicycle hockey is the International Unicycling Federation which publishes the rules for all unicycle sports. The most recent set of rules for unicycle hockey was published in 2015. The court used is between 35 and 45 metres in length, and 20 to 25 metres wide. It should have either beveled or rounded corners, and barriers on all sides. The goals are also set back from the end walls so that players can go behind them, similarly to ice hockey. Any stick which is legal for ice hockey, other than that of a goalkeeper, can be used. The unicycles can have a maximum wheel diameter of and a tennis ball is used. Competition There are three national unicycle hockey leagues: Australia, with 8 teams in 2016; Germany, with 89 teams; Switzerland, with approximately 20 teams In addition to these leagues, there are clubs and teams in other countries, including United Kingdom, France, Denmark, Sweden, Hong Kong, Singapore, Taiwan and Korea. International competition in the sport takes place at the biennial Unicon world championships and regional tournaments including Eurocycle and APUC. History The first known instance of hockey on unicycles is a short segment in the 1925 film Variety, which shows two performers on a stage, one using a field hockey stick to push a ball around. In 1960, unicycle hockey was mentioned as one of the activities of the Albuquerque Unicycle Club, founded in 1957, and then the only known unicycle club in the United States. In 1971, the game was being played in Japan. In 1976, a unicycle hockey club called 'Wheel People' was founded in California and ran for about ten years. In 1985, LaHiMo became the first German unicycle hockey club, based in Langenfeld. The first British Unicycle Hockey team of the modern era was formed by the apprentices of David Mariner, a manufacturer of DM Unicycles, by the company DM Engineering, in Wimborne, Dorset, U.K. The formation of LUNIS, a north London based team in 1987, meant that competitive