Ronnie O’Sullivan dumped out of the UK Championship by Alexander Ursenbacher

Seven-time champion Ronnie O’Sullivan was dumped out of the UK Championship by Switzerland’s Alexander Ursenbacher in Milton Keynes.

The world No66 produced a thrilling display of attacking snooker then repelled an O’Sullivan comeback to edge a 6-5 second-round win.

It was Ursenbacher’s second win over O’Sullivan in two career meetings, having beaten him at the Welsh Open last year.

Seven-time champion Ronnie O’Sullivan (above) was dumped out of the UK Championship

Despite an error-strewn display,

Ursenbacher’s policy of all-out attack, which served him so well in the first part of the match, began to go astray as he neared the winning line.

And O’Sullivan looked set to rescue a win when he turned a 4-2 deficit into a 5-4 lead.

But a badly overcut red by O’Sullivan forced a decider, which Ursenbacher won with a pair of brilliant long reds.

O’Sullivan was beaten by Switzerland’s Alexander Ursenbacher (above) in Milton Keynes

O’Sullivan said afterwards: ‘He played really well, he deserved his victory. I think I did well to get five frames, the scoreline flattered me to be honest — it should have been 6-1, 6-2 really.

‘I got back into it, but really he was much the better player.’

After what was surely the biggest win of his career, Ursenbacher said: ‘I knew I could beat him in a best-of-11 and I had nothing to lose. My goal was just to play Ronnie, and this has opened so many doors for me that my goal is to win it now.’