Fallon Sherrock won £501,000 by beating Luke Littler in a single leg of darts live on Netflix in Manchester.
After regional qualifying heats were held in September to produce a maximum shortlist of 20 'amateur' opponents, 'Beat Luke Littler' offered a lucrative award to anyone who could beat the darts prodigy over a single leg.
The £501,000 jackpot is the second most valuable prize won in the sport's history, with only the World Championship offering more (£1 million) for its winner.
- Who is Fallon Sherrock? 'Queen of the Palace' beat Luke Littler to win £501,000
On Friday, Littler saw off the likes of Australian jockey Zac Spain and refuse collector Taylor Forrester before being beaten by Sherrock -- his 15th opponent -- with the event concluding quickly after his defeat.
"It's insane," Sherrock said. "Honestly, I can't put into words how much this means and especially having Rory [her son] here. The first time he's ever been to anything and he's seen me win.
"It was lovely. Sorry, I'm really lost for words right now, but yeah, it was a great moment and I'll memorise this forever."
Sherrock gained the advantage of throwing first against Littler by going closer to the bullseye than the double world champion could manage with a single dart.
She then displayed impressive scoring power, including a 180, to leave 43 with Littler back on 142. After setting up double 20, Sherrock hit 'tops' at the second attempt.
Sherrock showed a remarkable lack of emotion in the moments after securing her fortune as she calmly removed her darts from the board.
The 32-year-old's inclusion in the event drew controversy as some considered her as not a true 'amateur.' Netflix considered anyone who does not -- and has never -- held a PDC Tour Card as an 'amateur.'
Sherrock is the only woman in history to have won a match at the PDC World Darts Championship. She progressed to the third round in 2019, beating Ted Evetts and Mensur Suljovic.
In a nod to her World Championship victories, Sherrock added: "I'm like, 'give me an opportunity and I'm going to take it every time.' I don't know what it is, but yeah, I'm really proud of myself right now."
'The Queen of the Palace' was knocked out in the first round last year but proved she remains a force to be reckoned with after ending Beau Greaves' 114-match winning streak in the PDC Women's Series in March.
Another Women's Series competitor, Katie Sheldon, was the fifth player beaten by Littler in the event.
Littler's form on the night was patchy. His best showing was a 12-dart leg against highly rated 14-year-old Jayden Walker, but he took as many as 22 to check out in another. He hit two 180s on the night.
"Brilliant. That's what one person had to do," Littler said. "Win the bull and go out with 15 and that's exactly what Fallon did.
"Obviously hit her 140 to leave the 142. When she missed the first go at tops, I was like, 'give me a chance.' But then she did, and yeah, world class."
Friday's event was hosted by Gary Lineker and included the likes of Richard Osman, 'Angry Ginge' and PDC supremo Barry Hearn offering insight and analysis.
Fans at the Manchester Central Convention Complex got a taste of a normal night at the darts with walk-ons and fancy dress on show.
Former PDC master of ceremonies John McDonald was brought of retirement to welcome each player to the stage and referee Huw Ware oversaw proceedings.
Producers seeded the contestants in line with their ability and their order of appearance was subsequently decided by their given number being drawn out of a pot in the style of an FA Cup draw. A further four players, including Sherrock and Sheldon, were selected via public vote.
The 'amateur' line-up also included a British army helicopter technician, a French student and a bricklayer.
"I've enjoyed every bit of it," Littler said. "The advert, the photoshoots, just everything leading up to this. It's been good. Yeah, maybe Netflix, we can do it again next year."