Ronnie on best behaviour as he storms into semis

Ronnie O'Sullivan kept his act clean as he became the first player to reach the Embassy world snooker championship semi-finals with an overwhelming 13-3 victory over Anthony Hamilton in Sheffield.

Under threat of disciplinary action after his behaviour earlier in the week, O'Sullivan showed impeccable table manners. There were no early concessions, no swearing under his breath and no crude hand signals.

Instead, he let his snooker do the talking and increased his tally of century breaks to 10.

Unless Ian McCulloch produces a major upset tonight, O'Sullivan will face seven-time world champion Stephen Hendry for a place in the final.

UK champion Matthew Stevens resumes today 11-5 ahead against Joe Perry and Graeme Dott holds 6-2 lead over David Gray.