
The official rankings for professional snooker players are known as the world snooker ranks. They determine who qualifies automatically for World Snooker Tour tournaments. The World Professional Billiards and Snooker Association maintains the rankings. The rankings provide players with an indication of their rank and also provide statistics on the sport.
Judd Trump
Judd Trump is in the top 10 of the world snooker rankings. He is well-known for his incredible breaks and ability to dominate the sport. He has won 23 ranking titles, including the world championship. He is only 33 years old and still has the potential to remain at the top of his sport for at most ten more decades. However, his age combined with the grind of the tour might wear him down.
Mark Selby
Mark Selby, an Englishman is one of world's best players. He is a former Under-15 champion of England and a recent World Snooker Championship champion. He also has a strong background in pool. He was the winner of the 2006 WEPF eight-ball pool championship and was a finalist in the 2015 Chinese Pool World Championship. Selby was born in Leicester, England. Malcolm Thorne, Willie Thorne's brother, was Selby’s coach.

Ronnie O'Sullivan
Ronnie O'Sullivan spent over 280 weeks at number one in world snooker. After reaching the semi-finals at the Tour Championship, his latest move saw him surpass Mark Selby in the rankings. The Scot was first ranked number one on the world stage in May 2002. He has since claimed 31 ranking titles. Six World Championship titles and five UK Championships are some of his achievements.
Mark Williams
Mark Williams is one of the best snooker players in the world and currently holds the number 10 spot. The Welshman became a member of the elite in 1995 with his wins at the Welsh Open and Benson & Hedges Masters. The latter title was won by him with a respotted Black in the final. He was the fourth player who won three ranking championships in 1998.
Graeme Dott
Graeme Dott, who has been awarded two ranking titles and reached final of the China Open 2010, is a Graeme Dott. His form has been inconsistent ever since. He has also struggled with depression and openly shared his struggles with the condition. The Australian has a poor ranking in the world rankings of snooker, but he has a great record at home.
Dott's career
Graeme Dott's climb up the world snooker rankings has been steady since 1994 when he became a professional. He was ranked in the top sixteen for 2001 and stayed there through 2009. He reached the quarterfinals of the Welsh Open 1996 and 1997. In 1997, he was the World Champion in 1997. In 2001, he finished second in both the 1999 Scottish Open or the 2001 British Open. He was also second in the 2004 World Championship, and the 2005 Malta Cup. He made his first competitive 147 break in 1999 at the British Open.

Dotts' ranking
Dott has had a fluctuating ranking in world snooker rankings over the years. Six times, he has made it to the top 16. He was ranked second in 2007/8 season. Dott's rank has fallen since then.
Mark Williams' ranking
In the last few years Mark Williams' world ranking in snooker has steadily improved. He has won several tournaments including the Players Championship Grand Final in 2001. Ronnie O'Sullivan also lost the final. He has also topped the world rankings on several occasions. However, his biggest ranking victory came in 2001, when he defeated Anthony Hamilton in the final of the China Open.