Martin Lukeman starts 140, 180, 149 to leave double 16 after nine darts and that's always going to be difficult to break the throw against.

He hits double eight after a couple of misses at double 16 and the two-leg lead is restored.

Both players hit 180s in leg 11 and are down to finishes after nine darts.

Mickey Mansell goes first at 101 and misses double 12 to take it out.

Martin Lukeman has 126 left but can't find a big treble, giving Mansell a chance to reduce the gap to one.

Great to have you with us! I trust it's a bit warmer where you are...

Stuart Pyke
Commentator on Sky Sports

This is turning into a terrific semi-final.

A Mickey Mansell 180 gets him down to a double, putting pressure on Martin Lukeman, who has 55 left.

But Lukeman takes it out in two darts and goes into the next break with a two-leg lead.

Lukeman won four of the five legs in that mini-session.

That's better from Mickey Mansell!

His first 180 of the match gets him down to a finish after nine darts and he breaks Martin Lukeman's throw to end a run of five successive legs for the Englishman.

Stuart Pyke
Commentator on Sky Sports

Image source, Kieran Cleeves/PDC

The darts that are dropping below the triple 20 will be a concern for Mickey Mansell. He seems to be reaching a little bit.

Martin Lukeman has settled down. He doesn't seem to be thinking about the bigger picture anymore, he's thinking about the darts match. He's into his work.

And Mickey Mansell's scoring struggles continue in leg eight, which Martin Lukeman takes with a 56 checkout.

Still a long way to go - the first to 16 legs wins - but Mansell will need to arrest this slide pretty quickly before this semi-final gets too far away from him.

John Part
Former PDC world champion on Sky Sports

That can happen but it will be a little worrying that is has happened so early.

Stuart Pyke
Commentator on Sky Sports

Mickey Mansell seems to have lost his radar a little.

The TV cameras pan to Batman and Robin in the crowd - nice of them to put their crime-fighting on hold and join us for the darts today.

Mickey Mansell struggles to find the big trebles and Martin Lukeman is in front for the first time in the match.

The break hasn't halted Martin Lukeman's momentum - he starts with a 180.

But Mickey Mansell is scoring pretty well himself, hitting a barrage of 140s so far in this match.

Leg six goes the way of Lukeman, his third in a row, with a successful try at double two.

Image source, Getty Images

The events of the past couple of months will surely have given huge confidence to Mickey Mansell and Martin Lukeman as their runs have progressed this week.

At the past two big tournaments, Mike de Decker (pictured) and Ritchie Edhouse were big outsiders before going on to win their first majors at the World Grand Prix and European Championship respectively.

Could we see another unlikely winner later today?

Stuart Pyke
Commentator on Sky Sports

Now we've got a semi-final! Martin Lukeman is walking off with a swagger.

Martin Lukeman is down to a finish first in leg five and needs the bull for a 122 - he gets it!

That'll give Lukeman a spring in his step as the players head off for the first break of this semi-final.

On his own throw, Martin Lukeman gets well ahead and finds the double 20 bed this time.

The Englishman is on the board.

John Part
Former PDC world champion on Sky Sports

Image source, Kieran Cleeves/PDC

Martin Lukeman will be disappointed because the chances he's had have both come against the throw so a couple of opportunities have already passed him by. He needs to settle down here now.

As John Part says, both of these players have a fairly methodical throwing style.

Martin Lukeman hits his second 180 of the match to open up leg three, but he's struggled on the doubles early on and Mickey Mansell takes advantage to secure a 3-0 lead.

John Part
Former PDC world champion on Sky Sports

The first session, or even two, it is about finding your game. Pick a target, finding your range and getting a flow into your game. These two players are quite deliberate players though.

Mickey Mansell gets the first break of throw with a clinical 96 checkout.