Ronnie O'Sullivan: World number one and Masters champion again questions his future in snooker

Ronnie O'Sullivan again questioned his snooker future after beating Zhou Yuelong 4-3 to reach the last eight at the World Grand Prix in Leicester.

World number one O'Sullivan is attempting to win his 41st ranking event title this week.

He claimed a record-extending eighth Masters crown on Sunday but despite that success is far from happy with his current form.

"The worst thing is you're winning tournaments," O'Sullivan told ITV4.

"If I was getting pumped every round playing like that, it would be an easy decision to make.

"I've got to really consider whether I can carry on feeling how I'm feeling out there - I just don't get any enjoyment from the way I'm hitting the ball. I feel like it's just hard work, I haven't a clue where the balls are going, and a lot of it's just guess-work."

O'Sullivan made breaks of 67, 107, 50 and a match-winning 90 to defeat China's Zhou and will now face Gary Wilson in the best-of-nine quarter-finals after the Scottish Open winner saw off Tom Ford 4-2.

In November, a dispute with snooker's governing body left O'Sullivan threatening to quit the sport if he has to reduce the time he spends in China.

But despite reducing his schedule this term, success in the UK Championship and Masters has given him the opportunity to win all three of snooker's Triple Crown events in the same season for the first time in his career.

"It's the only thing I've known and it's hard not to do this because it's my job, it's all I know, so I've struggled through it," O'Sullivan added.

"But I can't accept bad cueing, I'd rather cue well and lose than cue awful and win tournaments. I get no satisfaction out of it, I really don't.

"I'd give everything I've got to enjoy the game but I have not had that for a long time."

Meanwhile, reigning champion Mark Allen lost 4-2 to China's Zhang Anda.

Zhang opened with a run of 95 and took the first three frames before Allen responded with a superb 137 break. The Northern Irishman also took the fifth frame before Zhang sealed his win.