World number one Michael van Gerwen and defending UK Open champion Peter Wright have both crashed out on an opening night of shocks in Minehead but John Part is making a memorable return to the TV stage.
(Click here for full tournament results & round-by-round draws)
What day one lacked in atmosphere due to the adverse weather conditions causing the action to be played behind closed doors with no spectators, was certainly made up by the immense drama caused by some incredible underdog displays.
Odds-on tournament favourite Van Gerwen entered the tournament at the third-round stage on Friday night and was 1/50 to see off Dutch youngster Jeffrey De Zwaan.
But the 21-year-old, who could have been backed at 14/1, showed no signs of nerves to pull off one of the biggest shocks in televised darts history by claiming a 10-8 victory.
MVG boasted a slightly higher average of 96.93 (de Zwaan 96.77) and managed three 100+ checkouts including a highest of 143 but his efforts were in vain against the impressive youngster, who hit six 180s.
"I can't believe it, I think I'm still dreaming," De Zwaan told www.pdc.tv. "It's one of the biggest wins of my career but I've played really well for a few months."
The magnitude of this result arguably eclipses MVG's first-round exit at the hands of John Henderson in the first round of last year's World Grand Prix.
Wright, 1/16, was also unanimously expected to see off 8/1 outsider Nathan Rafferty but the unheralded 18-year-old fought back from 9-8 down to sink Snakebite 10-9.
Few will have heard of the Northern Irishman before tonight but now he could have shown the world of darts what a bright future he may have.
Raymond van Barneveld had survived an afternoon scare in the second-round against Mike Norton, who missed four match darts for a famous win before losing 6-5, but the Dutch veteran didn't last much longer as an inspired Mervyn King thrashed him 10-4.
Another former world champion bowed out as Adrian Lewis lost 10-5 to Dirk van Duijvenbode, who had earlier knocked out Alan Norris.
Ex-Premier League player Dave Chisnall was another notable casualty as he lost 10-6 to Ryan Meikle.
Interestingly, an accumulator of de Zwaan, Rafferty, King, van Duijvenbode and Meikle would have paid 38,880/1 with Sky Bet!
World champion Rob Cross avoided an upset with a hard-fought 10-8 win over Nathan Aspinall while Gary Anderson is vying for favourtism with Voltage after a 10-3 victory over Robert Rickwood.
There were also win for fellow Premier League players Michael Smith (10-5 Kirk Shepherd), Daryl Gurney (10-9 Jelle Klaasen) and Gerwyn Price (10-6 Alex Roy) but Simon Whitlock lost 10-7 to Ian White.
Price was one of our Chris Hammer's outright picks at 80/1 alongside 28/1 selection Corey Cadby, who won tonight, and they're prices will be a lot shorter now.
Meanwhile former three-time world champion Part, who is the star of the weekly Sporting Life Darts Podcast, hadn't qualified for an individual televised ranking event since the 2015 World Championship but his efforts just to get to Minehead were so nearly in vain due to Storm Emma.
Part was in Toronto on Wednesday before somehow getting to the freezing south west coast in time - no mean feat considering 11 players had to withdraw having failed to travel in the conditions.
Nevertheless the snow and icy conditions had already claimed Thursday night's Premier League fixtures in Exeter and there were doubts until Friday morning whether the 'FA Cup of Darts' would be staged at all.
Although the first proper major of the season at Butlin’s Minehead Resort was eventually given the all clear, the opening day's play was behind closed doors with no spectators allowed while the Main Stage games were moved to the smaller Red's Bar.
This robbed Darth Maple of a popular return in front of a big crowd while it was perhaps an even bigger disappointment to the 32 amateur players who booked their UK Open spots from the Rileys Qualifying events up and down the country over the past month.
The Canadian played two of those players during the afternoon - first defeating John Morris, a stone mason from Wolverhampton, 6-2 before thrashing Paul Whitworth 6-0.
A confident Part came back out for the evening session knowing just one more win would see him reach the weekend and he did so in emphatic fashion by putting Dave Evans to the sword 10-2.
Basingstoke-based delivery driver Paul Hogan was the best-performing Rileys Amateur Qualifier for a second successive year, as he defeated Darren Brown and Paul Nicholson to win through to the last 32.
The other three Rileys Amateur Qualifiers who won through to the third round, Harry Ward, David Airey and Darryl Pilgrim, all saw their runs in Minehead ended with losses to Chris Dobey, Jason Lowe and Steve West respectively.
Scroll down for the day's results and fourth-round draw
Fourth Round (to be played Saturday - click here for UK Open schedule)
Third Round
Second Round
First Round