A good response from Luke Littler. He hits a 180 to take control and leave 84.

Littler gets a dart at the bull and it hits it but bounces out!

No bother, he comes back and hits tops.

Image source, Kieran Cleeves/PDC

You very rarely see Luke Littler miss the double 10. His darts are usually a magnet to it but he's been nowhere near it tonight.

Luke Littler sticks two in T20 but hits the outer bull when going for the big fish.

Josh Rock can't make him pay but Littler misses two more darts at double 10. Back comes Rocky to move two legs away.

A reminder that Luke Littler has won all 15 of his major semi-finals while Josh Rock has lost all three of his.

It's very tense now with the finish line in sight.

Both of these men will fancy themselves to book their spot in tonight's final.

The first to 11 wins.

Luke Littler can't take out the big fish so back comes Josh Rock to finish the 100 and he does just that to move three legs away from the final.

Chris Mason
Former PDC World Championship quarter-finalist on ITV4

Image source, Kieran Cleeves/PDC

The 70% on the doubles from Rock is the reason why he's keeping with Littler who's averaging nigh-on a tonne and nearly seven points more than him.

A couple of trebleless visits from Josh Rock give Luke Littler the advantage in this leg and he's down to 45.

He goes five and double 20 to level it up.

Louise: It's incredible, the calmness Luke Littler always has when he is behind in a game. It really doesn't affect him, whereas other players would fall apart!

Josh Rock leaves 72 from 164, with Luke Littler unable to take out 138.

Back comes Rocky and he moves into the lead by finding double 12.

These lads are trading 14-darters here.

Luke Littler is in charge. He's down to 76 and he takes it out with two darts.

We're all square again.

Josh Rock lands a 180 to get us going in the 11th leg but Luke Littler is sticking with him.

Rock leaves 68 with Littler on 38 and he can't hit the double 16 for the leg, but Littler misses two at double 10 himself.

Back comes Rock for the leg and to stop the rot.

James: Can't help but feel Littler will go on and win this now. Rock had to be ruthless and not allow him back into the game but unfortunately he's done just that.

Peter: I can only think Littler likes to play catch-up!

Luke Littler looked down and out. Nothing was landing, but now look, he's level.

Scary stuff if you're Josh Rock.

Image source, Kieran Cleeves/PDC

Luke Littler finds another 180 to get down to 40 with Josh Rock on 79.

He steps up and hits tops with his first dart to level it up.

Who'd have thought this?

Luke Littler is getting going here with a 177 and 180 in the leg. He has a dart at tops for a 107 but drops short.

Josh Rock doesn't touch the 120 so back comes Littler to hit double 10.

That's three on the spin.

Luke Littler kicks the leg off with a 180 and he's down to a finish first.

He can't touch the 92 but sets up for tops with Josh Rock not on a finish.

Littler nails the D20 with his first dart and is back within two of Rock.

Luke Littler comes back and finds the double five with his first dart.

Can he get something going?

Luke Littler is down to 64 with Josh Rock out on 194. He needs tops but drops short again. He comes back and misses three at his favourite double 10.

It's 16 in a row missed at a double now.

Josh Rock is down to a finish against the throw first once again. Luke Littler is miles off it right now and Rock rubs salt in the wounds with a beauty of a 128 finish.