Justin Pipe will move into world darts' top ten after beating Kevin Painter to book a place in his second major quarter-final.
The Force of North Curry near Langport – ranked 22nd at the start of the year by the Professional Darts Corporation – held his nerve to beat the Premier League ace 3-2 in the World Grand Prix.
Pipe, who celebrated the win on the Dublin stage with a familiar breakdance, edged a tight first set 3-2 before Painter took out 88 on the bull to level with the second set.
Former tree surgeon Pipe swept through the third without reply, but Painter took set four 3-1 and led in the fourth only for Pipe to win three legs on the spin and line up a meeting with home favourite Brendan Dolan in the last eight.
The 40-year-old will also scoop enough prize money to leapfrog five-time world champion Raymond van Barneveld in the PDC standings once the competition concludes.
Pipe said: "I am very happy. It feels better to win that game against Kevin than to win my group in the Championship League recently.
"You could see by my celebration at the end how much it meant to me. I'm absolutely over the moon to come out of that the winner and be in my second television quarter-final. It's going to take me into the world's top ten, which is amazing."
Northern Irishman Dolan continued his love affair with the doubles-start competition he finished runner-up in last year by beating Vincent van der Voort.
Pipe said: "Brendan's brilliant and he's having an amazing run in the World Grand Prix, both last year and this year. He knocked me out of the European Championship last month so I want to get my own back. But it will be very hard on Friday."
Dolan added: "The crowds are unreal for me, they're like an extra dart for me and they get my adrenaline flowing when I get up on stage.
"My finishing's superb at the moment and I'm feeling brilliant. There's nothing perfect about my game, but my finishing is the best part of it at the moment when it might have been the worst in the past. I'm not sure what it is but I seem to come good at this time of year."
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