EVENING SESSION
Dave Chisnall produced the performance of his life - and one of the greatest ever seen on the Ally Pally stage - to whitewash Michael van Gerwen and reach his first ever World Championship semi-final.
Chizzy came storming out of the blocks and never let up throughout a brutal one-sided contest as he averaged 107, threw 14 180s, landed three 100+ checkouts and even came agonisingly close to nine-darter in a ridiculous leg that will live long in the memory.
The result was also a sensational way to end a 27-match winless streak against MVG dating back to February 2016, while he hadn't beaten him on TV since the 2013 World Grand Prix quarter-finals.
"I've been under the radar for the last few years but I want this World Championship title and I know I am playing well enough to win it."
Van Gerwen, who had previously come through an epic of the ages against Joe Cullen in the previous round, wasn't at his brilliant best with an average of 98.29 and four 180s but much of that was down to the constant barrage of heavy scoring from Chizzy and was under pressure on almost all of his 16 attempts at doubles - of which he hit seven.
His high point was a 150 checkout which helped him level the third set at 2-2 but he was unable to earn a set dart as Chisnall pinched it with a pivotal finish from 86.
Three-time champion Van Gerwen will now lose his world number one spot if Gerwyn Price lifts the trophy on Sunday.
After suffering his first ever whitewash defeat at the Ally Pally since Phil Taylor thrashed him 4-0 in 2009, the Dutchman said: "It was difficult match. Dave took every opportunity he had. Fair play to him but I let myself down a little bit. I didn't turn up. My scoring power wasn't there.
"All I can say is 'well done Dave.' He played well and I didn't. I can only blame myself. I need to reflect on my game and work out what went wrong. I'm gutted."
Gerwyn Price is into the World Championship semi-finals for the second year in a row but only after holding his nerve in a tense deciding leg following a spirited comeback from Daryl Gurney.
Of the 15 matches that have gone the complete distance in this year's tournament, the Iceman has now been involved in two of them having also survived a huge scare against Brendan Dolan in the third round, and there's sure to be more drama coming his way if he's to get his hands on the Sid Waddell Trophy for the first time.
Price stormed into a 2-0 lead for the loss of just one leg before a revived SuperChin, who had endured a terrible 2020 by his standards coming into the event, bounced back by taking the next two sets by 3-1 scorelines.
This season's World Grand Prix, World Series and World Cup winner regained the upper hand in a dramatic fifth set in which he took out a 143 finish to clinch it after Gurney had spurned five attempts at a double to force a deciding leg.
The Northern Irishman failed to capitalise on a fine 11-darter in the next as he missed a set dart at tops and was made to pay when Price took out 72 with his last dart in hand for a 4-2 lead.
However, just when it looked as though the contest was all but over, Gurney picked himself off the canvas to win six legs without reply and while he'd still not been ahead at any point, it seemed as though he'd seized the momentum.
Price kicked off the decider with his third ton+ checkout of the match with a brilliant 107 finish under pressure when Gurney waited on 33 only for the 2017 World Grand Prix champion, to land his second with a splendid effort from 130 to complete a cool 12-darter.
The next two legs went with throw as the match reached the crescendo of the decider, which the Welshman pinched with a nerve-jangling 16-darter on tops, as Gurney waited to come back on 52 having failed to take out 108.
"I think that might have been the best I've played for a couple of years and once it gets to the last four, it's anybody's tournament to win."
Stephen Bunting also averaged over a ton as he reached his maiden Ally Pally semi-final with a 5-3 victory over Krzysztof Ratajski.
The former Lakeside champion, who was playing in his first quarter-final on this stage since his debut in 2015, continued to remind everyone of why so much was expected him during his early PDC days with a yet another impressive performance at this year's tournament.
Having defeated Andy Boulton, James Wade and Ryan Searle in the previous rounds, the confident Bullet stormed into a 3-0 set lead for the loss of just three legs to take full control. He was particularly impressive in the second set, in which he used just 39 darts and fired in his first of four 100+ checkouts.
Birthday boy Ratajski, who was trying to celebrate his 44th birthday in style, punished his opponent for a missed set dart in the fourth to finally get on the board but was stunned in the fifth as Bunting wiped out a 2-0 lead with the Big Fish 170 checkout before taking the decider.
The Polish Eagle fought back bravely by taking the next two sets by 3-1 scorelines - with the help of a 12-dart completing 124 checkout - but ultimately it would prove in vain, with Bunting clinching victory by whitewashing him in the eighth.
Bunting threw five of the 12 180s in the match and averaged 101.01 comapred to Ratajski's 97.58 but the biggest difference was the finishing as he pinned 52.78% of his double attempts while his opponent could only convert 38.89% of his.
He told www.pdc.tv: "This is the best win of my career. Getting to the semi-finals of the biggest tournament in the world is the best thing I've ever done. I'd love to win it," said Bunting, after bettering his quarter-final run of 2015.
"It's been a difficult run for me but I never give in, never say die and I'm dangerous. If I can keep my nerve I've got a great chance of winning it."
Friday January 1
Afternoon Session (1200 GMT)
Quarter-Finals (Best of 9 sets)
TV Coverage: Sky Sports Darts
Evening Session (1800 GMT)
Quarter-Finals (Best of 9 sets)
TV Coverage: Sky Sports Darts
Saturday January 2
Evening Session (1800 GMT)
TV Coverage: Sky Sports Darts
Semi-Finals (Best of 11 sets)
Sunday January 3
Evening Session (1930 GMT)
TV Coverage: Sky Sports Darts
Final (Best of 13 sets)