Luke Humphries and Nathan Aspinall are just countering each other perfectly.

A 177 for Cool Hand leaves 36, but The Asp gets a chance at 132 first. Aspinall can't take it though.

Humphries pins double 18 for 4-4. A great fightback.

Luke Humphries has to win four legs out of five from here to fend off this brilliant Nathan Aspinall display.

Against the throw, Cool Hand is ahead but it is Aspinall who can go at a finish first after firing in a 140.

Needing 119, Aspinall gets 99 of them.

Humphries pins 54 in two darts, ending at double 20, to break back.

Wayne Mardle
Former World Championship semi-finalist on Sky Sports

Nathan's loving it right now. Absolutely loving it. You make a mistake and he is punishing you.

Luke Humphries is just keeping pace with Nathan Aspinall, who has been brilliant in the last couple of legs.

Humphries has six darts at 164, but only scores 60 with the first three.

At 104, Humphries goes short on his one dart at double 16.

Needing 52, Aspinall leaves two darts at double 16. He only needed one.

Image source, Getty Images

Nathan Aspinall is loving life!

He starts leg five with a 180 and starts geeing up the crowd. Luke Humphries responds with one of his own.

After nine, Aspinall needs 90 for a 3-2 lead. Bull sets up double 20 for an 11-darter, which he takes. Excellent darts from Aspinall.

Luke Humphries gets down to a 164 out on his throw, Nathan Aspinall responds by hitting that exact score with a bull to leave 142.

The Asp goes treble 17, treble 17 and double 20 to break back.

Six exceptional darts from Aspinall. From 306 to 0 in six darts.

Dan Dawson
Commentator on Sky Sports

They've had chances to win each leg - it could have been 3-0 either way.

Luke Humphries gets his first 180 of the night and does so without seeming to even try.

Two visits later, Nathan Aspinall responds with his third in as many legs.

At 91, Humphries splits doubles 20 and 10, but Aspinall puts two darts over the bar at tops.

Humphries takes his second attempt at double five for a break of throw.

Nathan Aspinall fires in another 180 against the throw to leave 63 for a break of throw.

Luke Humphries gets a chance to stop him trying it, but can't land a second double 18 after pinning the first.

Aspinall almost takes it after a very horrible set up, but misses double 16.

Humphries returns to the 18s and levels up.

Nathan Aspinall starts with a 180 up first, earning a smile and fist bump out of Luke Humphries.

A 145 from The Asp set up a visit at 65 to hold throw, but Humphries is waiting on a 48 chance of his own.

Aspinall inadvertently finds the bull first and misses his one dart at double four.

Humphries with a brilliant marker at 16, but then splits the double and double eight for good measure.

Aspinall, down at the twos, takes the leg at the third time of asking.

This Newcastle crowd are well up for it.

Two great walk-ons for the two semi-finalists, first "Mr Brightside" and then "I Predict A Riot." Excellent stuff all round.

Aspinall even joins in with Humphries' walk-on chants. Two classy players, both at and away from the oche.

The crowd then start with a chant of "Leeds are falling apart again." Humphries laughs and joins in!

Aspinall to throw first, game on!

Image source, PA Media

Luke Humphries, speaking to Sky Sports after his quarter-final win over Chris Dobey:

"It wasn't pretty, it was probably one of my worst performances of the Premier League campaign.

"Chris was under so much pressure and it was a great crowd, it shows how great the Newcastle fans are. There was no whistling or booing, they gave me a good atmosphere to play my darts.

"Chris was under pressure and I managed to capitalise on some of his mistakes."

Next up, Luke Humphries takes on Nathan Aspinall for a place in the final against Luke Littler.

Humphries has spoken on his quarter-final win over Chris Dobey earlier tonight.

Should Luke Littler win tonight's action in Newcastle, it would move him onto 26 points for the Premier League season.

This current format is in its fourth season. 26 points would have been enough for a top-four finish in each of the previous three seasons.

On top of that, there are still eight weeks left of the season after tonight.

Almost all of Luke Littler's Premier League displays this term have seen him average 100 or often a good chunk over that.

The Nuke was back at 97.51 in his win over Rob Cross, but still ahead of Rob Cross' 94.98.

Littler landed six of his 15 darts at a double, while Cross took three of his eight double chances.

Throwing for the match, Luke Littler starts leg nine with a 180 which is where the hopes of a nine-darter end.

After nine, The Nuke sets up a 170 out shot for the match, with Rob Cross waiting on 164.

Treble 20, treble 20, 25. So close to reeling in the big finish. He even boos himself a bit.

Cross allows Littler back, even after hitting bull twice, before the Littler takes the match on double 10.

Five Premier League finals in a row for Luke Littler.

Rob Cross has to reel off four straight legs here. That last leg was the time to put the pressure on.

Cross takes a commanding lead and gets at least six darts at 76, missing double 20 with the third.

The fourth sets up double 16 and the fifth takes it.

Image source, Getty Images

Luke Littler, after that last leg, is now on 100 180s for the Premier League season. Rob Cross has 35.

Having scored 88 from his first six darts, Littler opens the door for Rob Cross, but Cross fails to punish The Nuke.

A 140 from Littler gives him momentum in a leg he should not be anywhere near, but he is down to 80 with Voltage over 100 behind.

Littler goes 20, double 20, double 10 for a 5-2 lead.

From here, Rob Cross needs to win five out of six legs to avoid six semi-final defeats out of six this season.

A 180 from Luke Littler doesn't help Voltage, but Cross responds with one of his own.

Littler makes it three in a row between them and Cross needs 41 to hold.

Voltage splits the 16s and goes wide at the eights. Littler misses bull to invite Cross back.

Cross pins double eight for 4-2.

Mark Webster
Former BDO world champion on Sky Sports

It's a mammoth task for Rob - it was a mammoth task before the match, but Rob is looking for another hold of throw. He's going to need two breaks of throw to turn this around.