Cork teenager Aaron Hill secured the most high-profile win of his nascent career as he pulled off a sensational victory over six-time world champion Ronnie O'Sullivan at the European Masters in Milton Keynes.
The 18-year-old Irish youngster beat the Rocket 5-4 just weeks after O'Sullivan won his sixth world title at the Crucible in August.
He had let slip a 3-1 lead against his illustrious opponent, but after O'Sullivan levelled proceedings and moved ahead, Hill hit back to force a decider and a break of 78 sent him through to the third round.
Hill, who won the EBSA European Under-21 Snooker Championships in March before subsequently turning professional, advances to face Wales' Matthew Stevens in the next round.
"I'm speechless at the moment," he said. "He was my childhood hero but I didn't just go out there to play him and be happy to be there, I still wanted to win the match.
"If I'd lost the match after being 3-1 up I would have been disappointed. I'm so pleased with that victory."
?? "One day I'm going to show him what I can do. I think today was the day."— World Snooker Tour (@WeAreWST) September 24, 2020
Newly-turned professional @AaronHill147 (18) was thrilled just to be playing his childhood hero. But then to BEAT him?
There's a new kid on the block ?? #BVEuroSeries pic.twitter.com/Xt8XzZcI43
O'Sullivan was not the only former world champion to exit in the second round with Ireland's 1997 champ Ken Doherty knocked out by Mark Allen.
Antrim's Allen equalled history in the 5-0 win by hitting four consecutive centuries but fell short of the record with no hundred registered in the fifth frame.
Peter Devlin also caused another upset against Mark Williams.
The 24-year-old had to hold his nerve to beat the three-time world champion in a decider at the Marshall Arena.
Devlin had been 4-1 up, but Williams responded only for the rookie to clinch a 5-4 victory with a break of 102.
Kyren Wilson, a runner-up at the World Championship, also progressed following a whitewash, while Ding Junhui had to dig in to beat Hossein Vafael 5-3.
Neil Robertson, who won the European Masters event in Austria at the start of 2020, made it through safely to the third round after a 5-2 win over Riley Parsons, but it was teenager Hill who was the talk of the town.