Image source, PA Media

Well then, Luke Humphries reign as world champion is over after a remarkable display from Peter Wright.

Snakebite rolled back the years to claim a memorable 4-1 win over Humphries, while there were wins for Welsh pair Gerwyn Price and Robert Owen earlier in the evening.

You can read Callum Matthews' report on a huge night at Ally Pally right here.

Luke Littler's path to the final suddenly looks that much clearer on paper but, given the performance he's just put in, Wright might have something to say about that!

Anyway, Littler first has to get past Ryan Joyce tomorrow. We'll be back to bring you all the action from the evening session from 18:45 GMT. You do not want to miss it!

Image source, PA Media

After all that drama, here's what we've got to look forward to tomorrow. Luke Littler, now the top seed in the top half of the draw, is back in action...

Afternoon Session (12:30)

Kevin Doets v Chris Dobey

Robert Owen v Callan Rydz

Ricardo Pietreczko v Nathan Aspinall

Evening Session (19:00)

Stephen Bunting v Luke Woodhouse

Michael van Gerwen v Jeffrey de Graaf

Luke Littler v Ryan Joyce

Image source, Getty Images

What a day it has been at Ally Pally. Here is what we've witnessed...

Afternoon Session

Third round

Jeffrey de Graaf 4-1 Paolo Nebrida

Kevin Doets 4-3 Krzysztof Ratajski

Dimitri van den Bergh 0-4 Callan Rydz

Evening Session

Third round

Ricky Evans 2-4 Robert Owen

Fourth round

Jonny Clayton 2-4 Gerwyn Price

Luke Humphries 1-4 Peter Wright

If you look at the numbers, Luke Humphries didn't play that badly at all. Against most people, it is a performance that would have been more than good enough.

But not against Peter Wright in this form.

Wright averaged 100.93 to Humphries' 99.23, while Snakebite also found his doubles a stunning 70% of the time. Cool Hand's 56% is a very good number but was second best on this occasion.

Peter Wright, speaking on Sky Sports: "Luke gave me a load of chances there, he didn’t play like he can.

"I’ve never had support like this in my life, thank you all. It’s amazing. I’ve been struggling for form all year and it’s so annoying because I know I can still play darts.

"I’ve never experienced anything like [that crowd] in the world.

"Luckily I wasn’t playing Luke Humphries from last year because he was awesome.

"I’m a double world champion and I want to win it for a third time. I’m not too old and you only have to play well for two or three weeks the whole year. These three weeks are all that matters and I’m in the quarter-finals.

"I thought I played rubbish tonight so hopefully I can play better and score better in the next round. As long as this crowd is behind me, I’ve got a chance."

After all the words pre-match, there is so much respect at the end of the match as Luke Humphries gives Peter Wright a big hug.

Wright in tears. A huge performance to deliver a huge upset.

Stunning from Peter Wright!

He's not just beaten the world champion, he has demolished him. What a performance from Snakebite!

Double eight clinches a 14-dart hold for the match. There was no let up at any stage.

Luke Humphries tried time and again to come back at him, showing flashes of his best, but Wright was just too good tonight.

Stuart Pyke
Commentator on Sky Sports

It is sublime and quite brilliant from Peter Wright.

Peter Wright is one leg away from an incredible victory...

He hits tops for a break of throw and now has the darts for the match.

Luke Humphries needs the most remarkable of comebacks. Snakebite doesn't look in the mood to allow such a thing.

Oh my goodness!

That is a leg of the very highest quality! Luke Humphries hit back-to-back 180s, left himself 41 but never got a look at it.

Peter Wright hit a maximum of his own and then hits the bull for a brilliant - and hugely important - 88 out.

Peter Wright's scoring has been good but his finishing has been exceptional.

He hit 11 of 16 darts at the outer ring for a 68.8% checkout percentage.

Luke Humphries is at 56.3%, which is not shabby at all, but it is not looking like enough right now.

John Part
Former PDC world champion on Sky Sports

This is unbelievable moments that we weren't really expecting.

Stunning from Peter Wright - he's a set away from knocking out the world champion!

Back-to-back 180s for Snakebite and although Luke Humphries gets one of his own, it's not enough.

Wright hits tops for a 60 out and the champion is going to have to stage a remarkable comeback if his title defence is to continue...

Stuart Pyke
Commentator on Sky Sports

It is a masterclass in finishing!

Luke Humphries gives a real push to break and avoid a deciding leg in the set... but to no avail.

One poor visit and Peter Wright is back in it.

Humphries can't take out 167 and Wright is ruthless in taking out 89.

It's Luke Humphries who is clinical in this leg to ensure yet another hold.

With Peter Wright have moved into position to break, the world champion has one dart at tops and nails it.

A 15-darter and Humphries is a leg from drawing level again.

Just a third 180 of the match and it goes to Peter Wright.

He gets him down to 41 and he remains clinical on the doubles. Just one needed at double 16 and it's another hold.

Dominant leg for Luke Humphries to start the fourth set.

Double four seals an 11-darter.

Given how well Peter Wright is doing on the outer ring, Humphries won't want to give the two-time champion a sniff.

Peter Wright is going to push Luke Humphries all the way here.

The world champion is there with him the whole way but Snakebite holds his nerve and hits double 18 for a 96 out and a 14-dart hold.

Luke Humphries is going to have to come from behind again.

We're going to a deciding leg for the third set running as Luke Humphries holds with ease.

That's 12 legs on the bounce that have gone with throw.

Peter Wright has the darts for the set.