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World number one O'Sullivan crashes out of World Championship in stunning defeat to Cahill

World number one Ronnie O'Sullivan crashed out of the World Championship in the first round after suffering a stunning defeat Credit: PA

World number one Ronnie O'Sullivan crashed out of the World Championship in the first round after suffering a stunning defeat to amateur James Cahill.

In arguably the biggest shock in the tournament's history, Cahill held his nerve to beat five-time champion O'Sullivan 10-8 at the Crucible.

O'Sullivan was a prohibitive favourite before the match after a season which saw him win five titles and compile his 1,000th career century on his way to victory in the Tour Championship.

But after recovering from 8-5 down to get back on level terms with the aid of breaks of 104 and 89, O'Sullivan missed a great chance to snatch the 17th frame and Cahill took advantage to move 9-8 in front.

O'Sullivan looked on course to set up a final-frame decider only to inadvertently pot a red when breaking the pack open from the blue, leaving Cahill to produce a nerveless break of 53.

The 23-year-old from Blackpool will face Scotland's Stephen Maguire in the second round.

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