High Quality Content by WIKIPEDIA articles! Mark James Williams, MBE (born 21 March 1975, Cwm, Ebbw Vale, Wales) is a Welsh professional snooker player who has been World Champion twice, in 2000 and 2003. Often noted for his single-ball potting, he has earned the nickname, The Welsh Potting Machine. He has been ranked the world number 1 for a total of three seasons in his career.