I'm the James Blunt of snooker - O'Sullivan

England's Ronnie O'Sullivan at Alexandra Palace in London, on January 22, 2017

Five-time world champion Ronnie "Rocket" O'Sullivan said Saturday he sees himself as more pop singer James Blunt than The Rolling Stones.

The mercurial 41-year-old was speaking after he steamrollered 2005 world champion Shaun Murphy 13-7 in their grudge second-round match at the World Championships in Sheffield.

"I don't see that I need to write a great album any more, I just need to be a supporting act. I don't mind letting the other guys write the good albums," said O'Sullivan.

"I'm happy to just be invited along and have them bring me out for half an hour -- 'Here he is, he's still alive, he can still perform' -- but then I'm happy to fade back into the security of life.

"The Rolling Stones are still the big act, they don't support anybody. Maybe I'm a bit like James Blunt. He seems a pretty cool dude," added O'Sullivan of the 43-year-old former British Army officer who has sold over 20 million albums globally.

O'Sullivan, embroiled in controversy earlier this week when he complained of being bullied by snooker authorities, reeled off three of the first four frames against Murphy to ease into the last eight.

He will face last year's finalist Ding Junhui, who survived a major wobble to come through 13-12 over his compatriot Liang Wenbo.

O'Sullivan, who has made his dislike of Murphy clear in the past, declared himself not that bothered about whether he will go on and win a sixth world crown.

"There might not be the intensity or the tournaments or the wins there were three or four years ago but I'm happier for it," said O'Sullivan, whose accusations earlier this week were rejected by snooker supremo Barry Hearn.

"I don't feel there's that much pressure on me any more," he added.

"I'm really not that bothered. I know it might sound crazy.

"At the end of it, if I was to win it I'd be sitting here saying it was a great, great feeling, but I've had that feeling five times before.

"It's nice for a few days, a week or so, but after that you think: Is it worth putting 365 days of blood, sweat and tears into hopefully winning the world title to get that feeling?"

Ding had led his second round match 6-2 but he will be concerned as to how he let his control slip to the extent Liang came out on Saturday and took the first three frames to lead 10-9.

However, Ding finally clicked into gear when he was in danger of going out putting together a break of 132 to level affairs at 12-12 and then he sealed his place in the last eight with a fine break of 70.