Northern Ireland's Mark Allen made an "incredible" 147 break but was left one frame away from defeat in the World Championship second round as Chris Wakelin dominated a thrilling session.
Allen trailed 10-2 after losing the opening four frames of the morning session on Friday. He went straight to the practice table in the interval and then produced snooker's moment of perfection in the first frame after the restart.
It made him only the 11th player to make a 147 at the Crucible. This was the 15th maximum in the main draw stage of the tournament and the first since Mark Selby's clearance in the 2023 final.
However, world number 20 Wakelin, who beat former world champion Neil Robertson in round one, was not distracted and secured a 12-4 lead that means he only needs one more frame to move into the quarter-finals when the match resumes at 19:00 BST.
The maximum break was Allen's second 147 of the season, having made one during his third-round match against Ben Mertens at the British Open, and the fifth of his career.
The achievement earns 39-year-old Allen £45,000 and is the 217th maximum in snooker's history. The cash bonus will be split if another player makes a 147 in the tournament.
Seven-time world champion Stephen Hendry, speaking on BBC TV, called the maximum "absolutely phenomenal" and added: "What a performance. Unbelievable. Incredible from Mark Allen.
"He was 10-2 behind and he's not scored a point for three frames, comes out after the interval and he makes a 147."
Coming to the Crucible is always special, but it became even more so for one fan as he pocketed £25,000 thanks to Allen's maximum.
One of the event's sponsors, Midnite Sports and Casino, has been running an initiative where for each session of this year's World Championship, one person in the crowd is selected at random and if a 147 happens, on either table, they win £25,000.
The lucky prize winner was named as Brian Nicholls from Tamworth, a lifelong snooker fan who had never been to the Crucible before and was bought a ticket by his son as a present for his 75th birthday.