The World Snooker Tour (WST) is the main professional snooker tour, consisting of about 128 players competing on a circuit of up to 28 tournaments each season. It is administered by World Snooker Ltd, the commercial arm of professional snooker, first formed in 1982 as a part of the World Professional Billiards and Snooker Association (WPBSA). It is also the organiser of most of the events throughout the professional circuit, including the prestigious World Snooker Championship. As more professional tournaments were held outside the British Isles since the 1970s, the "World Snooker" banner was increasingly being used for different tournaments along with the growth of the sport to other countries. The establishment of the World Snooker Association (WSA) in 1997 introduced a unified branding for the professional game, and it was further revised to its current form in 2020. Since 2010, the principal stakeholder in World Snooker Ltd is Matchroom Sport, which owns 51 percent of the company; WPBSA, the sport's governing body, owns 26 percent. To compete on the World Snooker Tour, players must be WPBSA members. Source: Wikipedia (en)