: Mark Williams entered as the defending champion but was eliminated in the second round, losing 11–13 to Joe Perry. Notable Records and Debuts
: In the semi-finals, O'Sullivan delivered a crushing 17–4 defeat to Stephen Hendry . This set a new record for the largest margin of victory in a World Championship semi-final, surpassing Hendry's own 1992 record.
: O'Sullivan became only the fourth player to win the World title more than once at the Crucible Theatre.
World Championship Snooker 2004 -
: Mark Williams entered as the defending champion but was eliminated in the second round, losing 11–13 to Joe Perry. Notable Records and Debuts
: In the semi-finals, O'Sullivan delivered a crushing 17–4 defeat to Stephen Hendry . This set a new record for the largest margin of victory in a World Championship semi-final, surpassing Hendry's own 1992 record. World Championship Snooker 2004
: O'Sullivan became only the fourth player to win the World title more than once at the Crucible Theatre. : Mark Williams entered as the defending champion