The ranking system was first introduced after the snooker 1976 World Championship. At that time, it was mainly to determine the seed players for the next World Championships. The initial ranking system was quite simple, only considering the players' world championship achievements in the past three years. The champion and runner-up got 5 points and 4 points respectively. 3 points for three or four students, 2 points for four or eight students, and 8- 16 students 1 point. Ray, the then three-time world champion? Therefore, Rilton became the first player ranked first in the world since snooker was introduced into the ranking system with a score of 15. The above scoring rules were reformed in the 1982/83 season. With the emergence of new events, the World Professional Billiards Association began to consider the results of these events into the ranking system. In the following years, jameson International (Snooker), Professional Players Championship (later LG Cup, now Snooker Totesport Grand Prix), Snooker Rada Classic, Snooker UK Championship and Snooker UK Open became ranking matches. Later, the scoring rules developed and changed almost every year, adding and withdrawing new gifts in the ranking system, and constantly adjusting the scores of various items. In the 2004/05 season, there are eight categories of events with world ranking points, namely: the LG Cup of Snooker, the British Open of Snooker, the British Open of Snooker, the Welsh Open of Snooker, the European Open of Snooker, the Irish Masters of Snooker, the Snooker Players Championship and the Snooker World Championship. In addition to the World Championships and the British Championship, the winners and runners-up of these events will receive 4000 and 3000 world ranking points respectively. The third and fourth place is 2050 points, entering the top 8 is 1750 points, and so on. 200 points out in the first round. However, the points in the World Championships and the British Championship are twice as high as above and 1.5 times respectively. In the 2005/2006 season, eight events won the world ranking points. They are: en:Grand Prix (original: en:LG Cup), en:British Open (snooker), en:UK Championship (snooker), en:Welsh Open (snooker), en:Malta Cup (snooker) (later changed to en:European Open (snooker). En:Irish Masters (snooker), world snooker china open and The World Champions.
In 2009-20 10 season, the points system of snooker competition was adjusted, and the points of both domestic competitions increased. The winners of the Shanghai Masters and China Open will get 7000 points, compared with 5000 points in the past. In addition, the winner of the grand prix will get 750 points more than before. The points won by the world champion will remain unchanged at 10000, while the points won by the British Championship and the Welsh Open will remain unchanged, and the champion will get 8000 points and 5000 points respectively.
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