Until tomorrowpublished at 21:42 British Summer Time 30 April
Image source, PA MediaAnd so the great one is into the last four. Not playing his best, not looking his best, but still in there.
us on Thursday for the semi-finals!
Summary
Click the 'watch & listen' tab for Table One & Two plus network coverage
RESULT: Ronnie O'Sullivan 13-9 Si Jiahui
RESULT: Judd Trump 13-8 Luca Brecel
Earlier results:
John Higgins 12-13 Mark Williams
Chris Wakelin 5-13 Zhao Xintong
Quarter-finals are best of 25 frames
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Until tomorrowpublished at 21:42 British Summer Time 30 April
Image source, PA MediaPostpublished at 21:38 British Summer Time 30 April
Pick your winner from that four!
How the semi-finals shape uppublished at 21:35 British Summer Time 30 April
It's Ronnie O'Sullivan against Zhao Xintong up first, starting at 13:00 BST on Thursday.
Then in the evening...Judd Trump against Mark Williams.
'I can't wait to see Zhao'published at 21:30 British Summer Time 30 April
Stephen Hendry
Seven-time world champion on BBC TwoJudd Trump is all about bullying the table, and Mark Williams is all about guile. It's going to be incredible in the semis.
But it's Zhao Xintong I can't wait to watch in a one-table situation, he has breezed through the tournament. My head says a Trump v O'Sullivan final but it will be some story if Zhao gets to the final.
What's the World Championship prize money?published at 21:27 British Summer Time 30 April
It may have been a long - checks - 11 days work for Luca Brecel but it is actually worth it.
The winner on Monday will pick up £500,000.
'Happy to be going home'published at 21:26 British Summer Time 30 April
Result: Trump 13-8 Brecel
Defeated Luca Brecel: "Judd's standard is so high it's incredible to watch. I didn't play well tonight but he took every chance.
"It has been a long tournament and I am really happy to be going home."
'I was always confident'published at 21:24 British Summer Time 30 April
Result: Trump 13-8 Brecel
Image source, Getty ImagesWorld number one Judd Trump on BBC Four after his win: "I played really well tonight, I managed to give myself a boost this afternoon by staying level and that was the difference in the end.
"I have played solid, I was always confident. I had the belief that I would grind him down and it's very nice to come out tonight and play well.
"I played Mark Williams the last time I was in the semi-finals and it was an epic, he is a legend of the game."
'I enjoyed every shot'published at 21:22 British Summer Time 30 April
Result: Trump 13-8 Brecel
Dennis Taylor
1985 world champion on BBC iPlayerThese two players have provided us with a wonderful quarter-final. I've enjoyed every shot. It's the world number one who acknowledges the crowd and goes through to the semi-finals.
'I can't get any worse'published at 21:22 British Summer Time 30 April
Result: O’Sullivan 13-9 Si
More from Ronnie O'Sullivan on BBC Four: "I have give it my best but I am hanging in there. I would like to be playing better but I have to try and find some form at some point.
"I don't feel rusty, I have only been playing for a month but I just couldn't face playing. It gets harder, look at the way Judd is playing.
"I won't be able to get away with what I have done so far. I can't get any worse, put it that way."
'I'm playing awful'published at 21:19 British Summer Time 30 April
Result: O’Sullivan 13-9 Si
Ronnie O'Sullivan speaking to BBC Four after his 13-9 quarter-final win over Si Jiahui: "I'm just grinding it out, I had some work done on my cue today, I am playing awful and my cue feels awful but I am still here.
"I miss the buzz of playing well. He had lots of chances, I was trying everything and he let me off the hook.
"Each match is an opportunity. The Chinese are such nice boys I love to see them playing well."
World Championship roll of honourpublished at 21:13 British Summer Time 30 April
Here's a look at some of the recent champions...
Postpublished at 21:13 British Summer Time 30 April
Result: O’Sullivan 13-9 Si
Stephen Hendry
Seven-time world champion on BBC TwoHe still has a mountain to climb to win it but I have seen enough to suggest he is a danger to my record. I've been expecting it for years.
A great eight for Ronnie?published at 21:12 British Summer Time 30 April
Ronnie O'Sullivan is seeking history at the Crucible, chasing a modern-era record eighth World Championship
The Englishman is currently tied on seven with Scot Stephen Hendry.
'Such an impressive end'published at 21:12 British Summer Time 30 April
Result: O’Sullivan 13-9 Si
Stephen Hendry
Seven-time world champion on BBC TwoThat red down the cushion to win the penultimate frame was incredible. That could be the shot to inspire him to win the title.
He's the greatest to get over that finishing line. He surges over it. It was such an impressive end to the match.
He was asked questions tonight but that's what you need. He is sharp enough to win it.
O'Sullivan into the semis!published at 21:10 British Summer Time 30 April
BreakingO’Sullivan 13-9 Si
Ronnie O'Sullivan gets the job done! He's into the semis for a 14th time...
Postpublished at 21:09 British Summer Time 30 April
John Virgo
1979 UK Championship winner on BBC TwoYellow, green and brown for a place in the final. He's turned it on just when it mattered!
Postpublished at 21:09 British Summer Time 30 April
O’Sullivan 12-9 Si
A pink sees Ronnie lead in the frame. Match point.
Postpublished at 21:08 British Summer Time 30 April
O’Sullivan 12-9 Si
It's still a bit sketchy, Ronnie having to work hard for every break as the cue ball gets away from him. Cannons go slightly askew. He's a bit short on the black but develops the last two reds!
The crowd surge. Is that the moment?
Postpublished at 21:06 British Summer Time 30 April
O’Sullivan 12-9 Si
Ronnie trails 43-0 but the balls aren't in bad shape. A chance to seal a semi-final berth here. He grits his teeth and pots a red. Away.
End of breakpublished at 21:06 British Summer Time 30 April
O’Sullivan 12-9 Si
Composed and clinical from Si in this frame so far, he's raced past 40...but then clatters the jaws with a simple brown...