Ronnie O'Sullivan won't be enjoying the 50th birthday he had hoped for after being knocked out of the UK Championship.

'The Rocket' , who turns 50 on Friday, suffered a shock 6-4 defeat at the hands of China's Zhou Yuelong in the first round of the Triple Crown event.

What happened in Ronnie O'Sullivan's opening match?

Heading into his opening contest in York, O'Sullivan held a 7-0 head-to-head record over his opponent, with three of those wins coming in the UK Championship.

The sporting icon was playing in his first UK event since losing to Zhao Xintong in the semi-finals of the World Championship in May.

And despite his lack of recent tournament experience on home turf, O'Sullivan held his own in the opening period.

Zhou claimed a close first two frames to take an early lead, but

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