Sport in the United Kingdom Until 2008, automatic promotion and relegation existed between Super League and the Championship when it was replaced by three-year licences for clubs to play in the former. Promotion and relegation returned to Super League and the Championship in 2015. The main knock-out competition is the Challenge Cup, which also includes clubs from France and Canada, and in the past has also included clubs from Russia. Rugby league is also played as an amateur sport, especially in the heartland areas, where the game is administered by BARLA. Since the rugby union authorities ended the discrimination against playing rugby league amateur numbers
Calcutta Polo Club provides advanced professional training in polo to aspiring professionals and amateurs. Members can keep their own horses in the club stables, or can book or use any of the horses available in the club. Students can enroll in a special subsidised student training programme in polo. Apart from training, the club organises various polo tournaments, which are mostly held in December in the Pat Williamson Ground, popularly known as Polo Grounds in Kolkata. Ezra Cup, the first ever polo trophy in the world, is named after Sir David Ezra, a leading Jewish business tycoon in Calcutta who patronized the sport