Mark James Williams, MBE (born 21 March 1975) is a Welsh professional snooker player who is a three-time World Champion, winning in 2000, 2003, and 2018. As the current World Champion, he is due to defend his title at the 2019 World Snooker Championship in April/May 2019. Aged 43 when he triumphed in May 2018, he became the second oldest winner of the World Championship at the Crucible (Ray Reardon was the oldest winner in 1978, aged 45). Often noted for his single-ball long potting ability, Williams has earned the nickname "The Welsh Potting Machine".
Williams has been ranked the world number 1 for a total of three seasons in his career (1999/2000, 2000/2001, and 2002/2003). His most successful season to date was 2002/2003, when he won the acclaimed treble of tournaments (known as the Triple Crown): the UK Championship, the Masters, and the World Championship. In doing so, he became only the third player, after Steve Davis and Stephen Hendry, to win all three Triple Crown events in one season. In addition, he is the first player (and to date, the only player) to win all three versions of the professional World Championship – the World Snooker Championship, the Six-red World Championship and the World Seniors Championship.
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