By World Snooker Tour

Kyren Wilson became the 20th first-time Crucible champion to fail to defend the title the following year as he suffered a dramatic 10-9 reverse against debutant Lei Peifan on the opening night of the Halo World Championship.

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In a match of momentum swings, Wilson won six frames in a row to lead 6-2, then lost seven in succession to trail 9-6, before a late fight-back, only to lose the decider. Having conquered the Crucible 12 months ago, it's a massive blow for the 33-year-old who had high hopes of retaining the title after a prolific season in which he has won four trophies. Wilson becomes the eighth first-time Crucible champion to lose in the first round the following year, and it ends a streak of nine consecutive years in which he has reached at least the second round.

Early Exits

First time champions to lose their opening match the following year 

China's 21-year-old Lei won his first ranking title earlier this season at the BetVictor Scottish Open, but said that tonight's win was the biggest of his career so far as he rose to the occasion on his maiden appearance at snooker's most famous venue. From 6-2 down, he hit his opponent with a barrage of high scoring, and after a late wobble he regained his composure to make an excellent break in the deciding frame. 

The world number 39, who nearly missed out on the Crucible as he had to come from 7-4 and 9-8 down to beat Gao Yang 10-9 in the final qualifying round, is through to the last 16 and will face Zhao Xintong or Jak Jones from Friday next week.

"It feels amazing. The Scottish Open was my first title and this was my Crucible debut — both moments are very special to me. The emotions were just as intense," said Lei.

Lei trailed 6-3 after the first session but dominated from the start tonight, firing breaks of 50, 53, 60, 75 and 89 to take the first four frames and lead 7-6. After the interval, Wilson had the first scoring chance in frame 14 but made just 19 before missing a red to a top corner and Lei punished him with 69. Another Wilson missed red to a corner pocket early in the 15th proved expensive as his opponent compiled a superb 92 for 9-6.

World number two Wilson pulled one back with a break of 106. In the 17th, Lei was two pots from victory on a run of 60 when he over-cut the third last red to a top corner, and Wilson later cleared with 45 to close the gap to 9-8. Lei led 40-10 in the 18th when he missed a mid-range red and Wilson's 60 drew them level.

Kettering's Wilson had one clear chance in the decider but made just 14 before failing to split the pack off the blue. He later made a safety error and Lei's tremendous break of 66 made him the first player to beat a defending champion in their debut match at the Crucible since Stuart Bingham knocked out Stephen Hendry in 2000.

Wilson said: "It's really hard to take, it really hurts. Lei potted some incredible balls and held himself together in the end, he seems like a cool character and I wish him all the best. It has been a long season, I have done so much. I am proud of the way I have handled it and hopefully I have given you guys (the media) plenty to write about. We are all trying to grow the game, make it more popular and help the younger generation to see it as a great sport to get into."

Lei added: "I didn’t think I had much chance when the draw came out. But the moment I stepped into the arena and saw the crowd, I just felt so excited. It really lived up to what I saw on TV all those years ago. I was definitely feeling pressure towards the end. I calmed myself down and told myself not to over-think — just to let go and play freely.

"I really enjoyed playing here - the crowd, the lighting, the whole atmosphere was amazing. I was fully immersed and happy throughout the match. In the deciding frame when the curtain came up, it felt like I was in a final. I used to watch that scene on TV when I was a kid - now it was real, I was actually sitting next to that table. It brought back so many childhood memories. And of course, it made me want to win even more - I’ve worked hard to get here, and I wanted to give something back to the fans and to myself."

On the other table, Barry Hawkins took a 5-4 lead over Hossein Vafaei. World number 11 Hawkins, runner-up here in 2013, top scored with 93 in taking a 3-1 lead. After the interval, Iran's Vafaei rallied with breaks of 56 and 123 to restore parity at 3-3. Hawkins pulled away again to 5-3, but Vafaei made an important 64 in the last of the evening to trail by just one frame overnight.