O'Sullivan was beaten 5-4 by Marco Fu in China

Ronnie O'Sullivan has apologised for his lewd comments and sexual innuendos during a media conference at last month's China Open.

The 32-year-old's actions, made after his loss to Marco Fu, are to be reviewed by the World Snooker disciplinary panel.

"I was upset with myself because everything I did was the exact opposite of what my dad had taught me," he said.

O'Sullivan faces Liu Chuang in the first round of the World Championship.

The two-time Crucible winner added: "I was there to socialise and network rather than win a snooker tournament. Dad instilled in me how to be a winner.

"He would be embarrassed to know how unprofessional my approach was in China."

Last week, current world champion John Higgins branded O'Sullivan "stupid" for making the comments in Beijing.

"I just thought he was really naive," Higgins told BBC Sport.

"You've got to be stupid to make those comments. However, Ronnie's not stupid when it comes to publicity."