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Defending Betfair World Snooker Championship champion Ronnie O'Sullivan is through to his 10th Crucible semi-final after romping to a 13-4 victory against Stuart Bingham, however he is once again threatening to retire from professional snooker after the tournament is over.

Judd Trump won the last five frames to come from 8-3 behind to level with 8-8 against Shaun Murphy in their Betfair World Snooker Championship quarter-final, meanwhile Ronnie O'Sullivan dominated in his match against Stuart Bingham, he leads 7-1.

The two main governing bodies of international snooker, the WPBSA & the IBSF, have agreed to further terms on improving the international development of the sport, with the aim to one day get it in to the Olympic Games.

Experienced pros Ricky Walden & Stuart Bingham will be finally making their debut appearances in the quarter-finals of the Betfair World Snooker Championship after Walden saw off Rob Milkins 13-11 & Bingham beat Mark Davis 13-10. Ronnie O'Sullivan also made it through, a 13-8 winner against Ali Carter.

Defending Betfair World Snooker Championship champion Ronnie O'Sullivan is looking the strong favourite to reach the quarter-finals after taking a 9-7 lead over Ali Carter. Ding Junhui is also looking strong to progress, having come from 6-2 down overnight to lead Mark King 9-7.

The amazing results in this year's Betfair World Snooker Championship 2013 continue as Barry Hawkins came from 9-6 down to beat Mark Selby 13-10 to book a maiden quarterfinal appearance at the Crucible Theatre, Sheffield

Yet another shock today at the Betfair World Snooker Championship 2013 at the Crucible, as Gloucester's Robert Milkins came from 5-4 down to beat former world champion Neil Robertson 10-8. Stuart Bingham also impressed in his match against newcomer Sam Baird.

Betfair World Snooker Championship 2013 debutant and the world no.70 from Thailand Dechawat Poomjaeng has caused the shock of the tournament so far, beating Stephen Maguire 10-9 in a thrilling first round match at the Crucible Theatre, Sheffield.

Mark Davis & Mark King recorded two of the best wins of their careers, beating seeded players John Higgins 10-6 & Mark Allen 10-8 respectively in the first round of the Betfair World Snooker Championship 2013 at the Crucible, Sheffield.

Crucible debutant Michael White has caused the biggest shock of the Betfair World Snooker Championship 2013 so far, by beating two-times world champion and fellow Welshman Mark Williams 10-6. John Higgins also looks to be in trouble as he trails Mark Davis 6-3.