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Round of 32, best of 11 frames
RESULT: Mark Williams 5-6 Stuart Bingham - Table 1
RESULT: Zhang Anda 6-3 Lei Peifan - Table 2
Afternoon-session results:
Judd Trump comes from behind to beat Neil Robertson 6-3
John Higgins beats He Guoqiang 6-0
Taking place at the York Barbican
That's all for today and the end of the first round. The last 16 starts on Wednesday and these are the fixtures...
Afternoon session
Evening session
Our coverage will be up and running at 13:00 GMT, hopefully you can join us then. Until next time, goodbye.
Results: Williams 5-6 Bingham Zhang 6-3 Lei
Michael Emons
BBC Sport at York Barbican
In a frantic evening session, two-time UK champion Mark Williams threw away a 4-1 and 5-2 lead as he lost 6-5 to another former world champion in Stuart Bingham.
Williams became the seventh of the 16 seeds to go out in the first round. There looked to be little chance of a shock when Williams only needed one more frame, only for Bingham to make breaks of 57, 79 and 82 on his way to winning four successive frames.
After Judd Trump and Neil Robertson had complained about the condition of table one in the afternoon session, China's Zhang Anda made a maximum 147 break on table two in his 6-3 victory over compatriot Lei Peifan.
Lei won the opening two frames, but Zhang's 147 came in frame four and he then moved into a 5-2 lead. He almost won it 6-2 only for a miscue on the penultimate pink to cost him the frame.
However, it did not matter as Zhang won the ninth frame to seal victory, and will meet Bingham next on Thursday.
Result: Zhang 6-3 Lei
Watch how China's Zhang Anda made a 147 break in his first-round match against compatriot Lei Peifan at the UK Championship at the Barbican in York.
Zhang makes 147 at UK Championship
Result: Zhang 6-3 Lei
Michael Emons
BBC Sport at York Barbican
What a night for Zhang Anda. He made the 21st maximum 147 in UK Championship history and also came from 2-0 down to beat Lei Peifan 6-3 to make it into the last 16.
He doesn't know who he will play in the next round as the match between Mark Williams and Stuart Bingham has gone to a deciding frame.
Williams 5-4 Bingham, Zhang 5-3 Lei
Michael Emons
BBC Sport at York Barbican
Zhang Anda was two shots away from victory, just needing the pink and black, only for a horrendous miscue on the pink - with the cue ball going airborne and bouncing off the top of the pink.
Lei Peifan takes advantage of his good fortune and makes it 5-3 to Zhang. Stuart Bingham has pulled another one back, but still trails Mark Williams 5-4.
Williams 5-3 Bingham, Zhang Anda 5-2 Lei Peifan
Michael Emons
BBC Sport at York Barbican
Both Mark Williams and Zhang Anda, the sixth and 11th seeds respectively, are one frame away from victory.
Stuart Bingham has just clawed one back against Williams. Bingham started the frame with a break of 57, eight reds and seven blacks, and on course for a maximum before he missed.
He ended the frame being placed in a number of tough snookers as Williams looked to snatch the frame, before Bingham took it.
Zhang, who has successfully made a maximum tonight, has won five frames in a row after losing the opening two to lead fellow Chinese player Lei Peifan 5-2.
The two winners of these matches play each other in the next round,
Williams 5-2 Bingham
Not this time. Stuart Bingham, after eight reds and seven blacks, sees his eighth black rattle around the jaws of the corner pocket but stay on the table as the break ends at 57.
Williams 5-2 Bingham
Michael Emons
BBC Sport at York Barbican
Stuart Bingham, trailing 5-2 and needing to win every frame to stay alive in his match with Mark Williams, has potted six reds and six blacks.
Surely not a second maximum of the night?
Michael Emons
BBC Sport at York Barbican
Here are all the players that have made a maximum 147 at the UK Championship.
Zhang 2-2 Lei
Michael Emons
BBC Sport at York Barbican
China's Zhang Anda made the first maximum 147 break of this year's UK Championship in his first-round match against compatriot Lei Peifan at the York Barbican.
Zhang, 32, potted 15 reds and 15 blacks and then all the colours in order with a packed crowd giving him a standing ovation as he sunk the final ball.
His maximum break is the 21st in the history of the UK Championship, the 208th in professional snooker and the sixth in the 2024-25 season.
The achievement earns Zhang a £15,000 prize, although that will be shared if other players do likewise in the rest of this week's tournament, which concludes on Sunday.
Zhang's 147 came when he was 2-1 down on table two, with the mid-session interval immediately following that.
The winner of the match will take on a former world champion - either Mark Williams of Wales or England's Stuart Bingham.
Zhang, the 11th seed, had previously made two 147s - against Anton Kazakov of Ukraine in qualifying for the 2022 European Masters and then again in the International Championship final against England's Tom Ford a year later.
If Zhang makes another maximum in the rest of the tournament, in January's Masters or the World Championship at the Crucible in Sheffield in April and May then he would earn a £147,000 reward.
Michael Emons
BBC Sport at York Barbican
Image source, PA MediaA maximum 147 from Zhang Anda - with the York fans giving him a standing ovation as he downs the final black.
That will earn him £15,000 - as long as no-one else does the same. That £15,000 prize will be shared if anyone else manages a maximum in the rest of this tournament.
That break took it to 2-2 in Zhang's match with Lei Peifan on table two.
Zhang 1-2 Lei
Michael Emons
BBC Sport at York Barbican
Zhang Anda has potted 10 reds, nine blacks. A maximum coming?
Williams 2-0 Bingham, Zhang 0-2 Lei
Michael Emons
BBC Sport at York Barbican
We're into the third frames of the night in the evening session with both Mark Williams and Lei Peifan holding 2-0 leads over Stuart Bingham and Zhang Anda respectively.
With Zhang losing, he would become the seventh of 16 seeds to be eliminated in the first round, although he still has plenty of time to turn things around.
Result: Trump 6-3 Robertson
Michael Emons
BBC Sport at York Barbican
Judd Trump was pleased to get through the match with Neil Robertson and agreed with the Australian that the conditions did not make it easy.
When asked if they were the worst he had played in as a professional, he responded: "I've played in some bad conditions, but that was close.
"It's disappointing as it seems to be the bigger events. It was very heavy all the time. I've always struggled here because the tables are so heavy.
"Hopefully they can change them. All the players have been struggling - hopefully they can do something about it."
A World Snooker Tour (WST) spokesperson said: "We always strive to provide the best possible conditions and welcome feedback from players.
"The recent weather has seen a large volume of rainfall and high humidity around the country. This can negatively influence the conditions."
Result: Trump 6-3 Robertson
Michael Emons
BBC Sport at York Barbican
Image source, PA MediaNeil Robertson, 18th in the world, had to come through two rounds of qualifying to get to York and his match with Judd Trump was one of the most eagerly awaited matches of the first round.
However, both players were critical of the conditions at York Barbican, with seven-time world champion Stephen Hendry, speaking on BBC TV, saying the table was "unplayable".
"I'm glad Stephen said it was unplayable because that was as tough as I'd ever played on," said 2010 world champion Robertson. "It was as unplayable as it gets in professional conditions. Being such a tough sport anyway it can make either player look stupid.
"This venue and the conditions usually play well - it's not the table fitters' fault. The arena felt fine and I don't understand it. With the bounce off the cushions it can fly two or three feet further on and you're out of position.
"I can't really fault my performance, it was just really tough going out there."
Result: Trump 6-3 Robertson
Michael Emons
BBC Sport at York Barbican
Both Judd Trump and Neil Robertson were critical of how table one played.
Although unhappy with the conditions, Trump was happy with how he performed to fight back and claim the victory.
"It was scrappy to start with and I managed to get a bit of momentum after it went 3-2 and I raised my game. I played as well as I could play on that table.
"I'm pleased with the way I battled through and the way I was able to turn it around."
Michael Emons
BBC Sport at York Barbican
Image source, Michael EmonsIt has been a quick turnaround and we're ready to go for the evening session matches. Two more world champions go to head-to-head as well as an all Chinese encounter.
Table one - Mark Williams (Wales, 6) v Stuart Bingham (England).
Table two - Zhang Anda (China, 11) v Lei Peifan (China)
Result: Trump 6-3 Robertson
Michael Emons
BBC Sport at York Barbican
Image source, PA MediaWorld number one Judd Trump won five frames in a row as he fought back from 3-1 down to beat three-time UK champion Neil Robertson and move into the last 16 in York.
Robertson had a glorious chance to move 4-1 ahead but missed the penultimate ball and that proved to be the turning point in the match.
Trump then made breaks of 73, 126 and 67 to move 5-3 ahead, and sealed the ninth frame to win 6-3 and set up a tie with three-time champion John Higgins.
Next up for Trump and Robertson is the round of interviews, and they will be here facing the snooker media very soon, with quotes to follow in this page.
Image source, Michael EmonsTrump 4-3 Robertson
Michael Emons
BBC Sport at York Barbican
Neil Robertson had a great chance to go 4-1 ahead, only to miss the penultimate ball of frame five and Judd Trump has capitalised by now winning three frames in a row to move 4-3 ahead.
It has not been the match we were hoping for, but Trump showed his quality in frame seven with a superb break of 126. That makes it a century apiece in this match after Robertson's run of 107 in frame four.
First to six plays John Higgins in the last 16 on Thursday.
Trump 2-3 Robertson
Michael Emons
BBC Sport at York Barbican
That could be a huge frame in the context of this match.
Neil Robertson had a glorious chance to move 4-1 ahead, only to miss the pink. Judd Trump then played safe, Robertson missed a long pot and Trump stuck him in a tricky snooker, which drew one six-point foul.
Robertson then tried to roll the pink down the table, but left it hanging over the pocket and Trump did the rest to make it 2-3.
Image source, Michael Emons