Littler holdspublished at 19:57 GMT 1 January
Littler 3-0 Ratajski (2-1)
Krzysztof Ratajski needs to take out 112 but can't. Luke Littler comes back to hit double five and win the leg.
Evening results: Luke Littler 5-0 Krzysztof Ratajski, Luke Humphries 1-5 Gian van Veen
Defending champion Littler receives positive response from crowd in straight-set win
Van Veen averages more than 105 to knock out 2024 world champion Humphries
Afternoon results: Ryan Searle 5-2 Jonny Clayton, Gary Anderson 5-2 Justin Hood
England's Searle into his first World Championship semi-final and will play Littler next
Scotland's two-time champion Anderson into last four for first time since 2022
Semi-finals to be played on Friday, with final scheduled for Saturday
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Charlotte Coates and Adam Millington
Littler 3-0 Ratajski (2-1)
Krzysztof Ratajski needs to take out 112 but can't. Luke Littler comes back to hit double five and win the leg.
Littler 3-0 Ratajski (1-1)
A 105.71 average so far for Luke Littler and a 56% checkout rate. Too good.
He leaves the Big Fish again and hits both trebles but can't find the bull.
Littler 3-0 Ratajski (1-1)
Now a ninth 180 for Luke Littler. Krzysztof Ratajski wires double 14 for a 111 finish and Littler punishes him by finding tops.
Littler 3-0 Ratajski (0-1)
John Part
Former PDC world champion on Sky Sports
You don't envision Littler getting derailed at any point. He's just going to proceed, and proceed at pace.
Littler 3-0 Ratajski (0-1)
Luke Littler whacks in his eighth 180 to leave 14 but Krzysztof Ratajski does well to hit double 16 and hold for a rare leg on the board.
Littler 3-0 Ratajski
Stuart Pyke
Commentator on Sky Sports
Quite simply a master at work.
Littler 3-0 Ratajski (0-0)
Luke Littler is absolutely unstoppable on the Ally Pally stage right now.
It's hard to imagine him losing to anyone when playing like this.
Littler 3-0 Ratajski (3-0)
Image source, Getty ImagesLuke Littler comes back with 100 needed. He finds treble 20 and tops for a 3-0 lead.
Littler 2-0 Ratajski (2-0)
He can't.
Littler 2-0 Ratajski (2-0)
Luke Littler kicks off the leg with another 180 and finds another.
He couldn't, could he?
Littler 2-0 Ratajski (2-0)
Both trade 180s but it's Luke Littler again down to a finish first.
He sets up tops and finds it with his second dart.
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Would love a Ratajski win here but he's just not taking his opportunities. Can't do that against Littler.
Lee, Newport Pagnell
Littler 2-0 Ratajski (1-0)
Luke Littler bangs in a fourth max to take control of the leg. He leaves 40 from 140 with Krzysztof Ratajski on 103.
Littler lands tops for a 13-darter.
Littler 2-0 Ratajski (0-0)
Image source, PA MediaA 107 average for Luke Littler in that last set but Krzysztof Ratajski did miss seven darts at the double.
You can't do that against the world number one.
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It's not a given it will be an all Luke final - Humphries has to get through Van Veen and Anderson before that's a possibility, I'm not entirely convinced he does.
Matt, Uxbridge
Humphries will beat GVV but won't beat Ando, he's too susceptible to mistakes and Ando will jump over it, whereas I think tonight the occasion gets to GVV.
Fergus, Inverness
The winner of Luke Littler v Krzysztof Ratajski will take on Ryan Searle in the semi-finals tomorrow.
Gary Anderson awaits the winner of Luke Humphries v Gian van Veen in the other semi.
Littler 2-0 Ratajski (3-0)
Luke Littler starts the leg with a max again but can't follow it up. He works his way down to 100 and needs tops for the set.
Nails it.
Littler 1-0 Ratajski (2-0)
John Part
Former PDC world champion on Sky Sports
That's not a good sign for Ratajski this early in a first-to-five match.
Image source, PA MediaLittler 1-0 Ratajski (2-0)
Both players chuck in a couple of 180s as Krzysztof Ratajski gets down to a finish. He can't take it out but leaves 16 and misses all three at the double.
Back comes Littler for 113. He can't nail tops but Ratajski misses three more doubles. Littler mops up on double 10.
Littler 1-0 Ratajski (1-0)
Stuart Pyke
Commentator on Sky Sports
He couldn't help himself going for the bullseye. He's a showman.