Williams was born in Cwm, near Ebbw Vale, in the Welsh county borough of Blaenau Gwent. The first left-handed player to win the World Championship, during the 2002/3 season Williams became one of only three players alongside Steve Davis and Stephen Hendry to have won each of snooker’s ‘triple crown’ events during the same season.
He has topped snooker’s world ranking list on three separate occasions and has made over 450-century breaks during the course of his career, including two maximums. He is one of only six players to have compiled a 147 break at the televised stages of the World Championship (2005).
Williams began playing snooker at an early age, scoring his first-century break at the age of 13 and claiming titles including the British Under-16 Championship and UK Under-19 Championship in 1991.
Williams would turn professional in 1992 and made steady progress up the world rankings, also making his debut at the Masters in 1995 having defeated Rod Lawler 9-5 to win its qualifying event.