Image source, PA Media

Luke Humphries leaves himself with a checkout of 87 to book his place in the final.

He nails treble 17 and double 18 then punches the air.

A meeting with Luke Littler is his.

Rod Studd
Commentator on Sky Sports

That's big. B I G in capital letters.

Luke Humphries misses the bull for a 126 checkout to break Nathan Aspinall. He then blunders looking at 25 to allow Aspinall a checkout of 80 but he fluffs it too.

Eight and double four earns Humphries a scrappy leg.

Advantage to Humphries now. He's one leg away.

Nathan Aspinall needs bull to finish to take the 15th leg, but cannot nail it.

Double 16 gives Luke Humphries the leg.

Image source, PA Media

Luke Humphries has upped the pace of his play and finds some rhythm, but a bullseye 124 checkout from Nathan Aspinall sees him hold the leg on his throw.

Grit and determination from Aspinall to stay in the contest here.

Rod Studd
Commentator on Sky Sports

This is a bar room brawl, which absolutely suits Nathan Aspinall.

Sam Drury
BBC Sport journalist at O2 Arena

It's only been a couple of legs and Nathan Aspinall still managed to hold but Luke Humphries has looked very good since that break.

Effortlessly finding the bed of treble 20 at the moment.

Luke Humphries is clinical on his own throw, though. He rattles through another leg to get himself back in front. Nathan Aspinall does not want to go away at the moment on his visits.

Mark Webster
Former BDO world champion on Sky Sports

That's six doubles from eight from Nathan Aspinall. He is hanging on in there.

Image source, PA Media

Two 180s from Luke Humphries in the 12th leg puts the pressure on Nathan Aspinall, who cannot get close with a checkout of 142. However, Humphries misses two chances at double top to seal the leg.

Aspinall manages to hold his nerve when he gets his chance at tops.

Luke Humphries left with a checkout of 81 and has two bites at double 12 to take the leg, but misses both. However, Nathan Aspinall is too far behind and Humphries takes the leg with double six at the first time of asking.

Sam Drury
BBC Sport journalist at O2 Arena

Image source, Getty Images

It looks like we've got real tussle on our hands in this second semi-final.

Most people expected it to be world champion against world number one in the final.

Well, world champ Luke Littler has done his bit. Will Luke Humphries follow suit? Given Nathan Aspinall is currently averaging 105, it is not going to be straightforward.

We are back under way at the O2 Arena.

Both players have averaged in excess of 100 so far in this semi-final.

Luke Humphries nails a 180 to keep the pressure on Nathan Aspinall, who leaves himself a checkout of 64.

A favoured double 16 gives Aspinall a 13-dart leg and ensures the players head into the break on level terms.

Image source, PA Media

Nathan Aspinall squanders the chance to break the throw of Luke Humphries as he misses double top. He grimaces in response.

Cool Hand Luke returns to the oche and checks out 60 to get himself back in front.

Really nothing to choose between these two as they exchange legs at a rapid pace. Nathan Aspinall with a 13-dart leg, sealed with double 16.

Mark Webster
Former BDO world champion on Sky Sports

Seven legs played, Humphries' 104 average plays Aspinall's 106 average.

Image source, Reuters

Lue Humphries is pacing behind Nathan Aspinall after leaving himself a straightforward checkout and nails double 16 to take the leg.

Mark Webster
Former BDO world champion on Sky Sports

Neither player is giving much away here.

Nathan Aspinall has the bit between his teeth here. His visits to the board are quick and decisive.

Luke Humphries misses bull to get back on terms and Nathan Aspinall is left 77. However, he misses tops to take a two-leg lead.

Humphries bangs in double eight to take the leg. All square again.