O’Sullivan knocked out of snooker World Championship by amateur

Cahill, the first amateur to play in the modern-day tournament, led 5-4 at the end of Monday’s first session at the Crucible Theatre in Sheffield and extended his advantage to 8-5.

Snooker great Ronnie O’Sullivan suffered one of the most stunning upset defeats in the history of the sport when he was beaten 10-8 by amateur player James Cahill in the first round of the World Championship on Tuesday.

England's Ronnie O'Sullivan scratches his head as he plays during day four of the 2019 World Snooker Championship at The Crucible, Sheffield, England, Tuesday April 23, 2019. (Nigel French/PA via AP) (AP)

Cahill, the first amateur to play in the modern-day tournament, led 5-4 at the end of Monday’s first session at the Crucible Theatre in Sheffield and extended his advantage to 8-5.

But five-time world champion O’Sullivan pulled back to 8-8 only for Cahill to take the next two frames, with the 23-year-old’s break of 53 completing a dramatic win.