Have we go another perfect leg - oh, never mind.

Both players start with 180s, Luke Littler hits another treble 20 but then it goes to pot for both players.

No bother for Littler. He goes on, hits double 10 and holds in 14 darts.

After losing five legs on the spin, that's an important hold for Josh Rock.

One dart at double 12 is all he needs to seal a 13-dart hold.

Image source, PDC/Taylor Lanning

Dan Dawson
Commentator on Sky Sports

Littler has now won every one of the last five legs. He has gone from looking in serious trouble to being in control of this semi-final.

The world champion raises a clenched fist in celebration as he hits tops to go two legs up.

A 12-dart hold for Luke Littler, secured on tops, and he has turned this semi-final around.

Josh Rock started fantastically but Littler has clawed him back. Will the Northern Ireland World Cup winner be able to respond?

Luke Littler is the first to double digits.

Magnificent comeback and Josh Rock's level is dropping at exactly the wrong time.

Littler hits his trusty double 10 for a 15-dart break.

We are all square!

Fantastic recovery from Luke Littler and that miss in the previous leg from Josh Rock is looking more and more costly.

Rock has played brilliantly, he still averages more than 100 but Littler has been relentless in chasing him down.

Image source, Getty Images

Wayne Mardle
Former World Championship semi-finalist on Sky Sports

This is now way closer than Josh Rock would have liked it. He has missed too many darts at doubles.

Luke Littler is on the charge.

The world champion breaks again, hitting tops after his twice on his previous visit.

Josh Rock missed one at it himself in between and it costs him.

Littler, from 5-0 down, can level it up if he holds in the next leg.

No real pressure on Luke Littler in this leg but he still produces a magnificent 134 set-up on his way to an 11-dart hold.

Both players are still averaging in excess of 100.

Luke Littler is at 102.51, while Josh Rock is doing a smidge better at 104.93.

A brilliant match so far. It is still impossible to call.

Image source, PDC/Taylor Lanning

Josh Rock maintains his break advantage with an 11-darter.

His scoring is brilliant - 180, 140, 150 to leave 31.

Luke Littler still manages to keep the pressure on with a 180 to get down to 88.

But Rock holds his nerve to hit double eight and hold.

It's been a while - but we have a hold of throw and Luke Littler is back to within two legs.

Josh Rock again misses darts to break but Littler hits double 12 and lets out a shout of "come on!"

He knows that was an important hold.

Bullseye!

Luke Littler makes it five breaks of throw in a row in this match!

After Josh Rock misses darts at double 16 and double eight, Littler hits the bull for the 90 checkout.

Wayne Mardle
Former World Championship semi-finalist on Sky Sports

When it's a long race like this you want to be the first to hit 10. It just looks imposing when you reach double digits.

Missed opportunities for both players before Josh Rock hits double 10 to get the break back straightaway.

Rock had missed three at tops to give Luke Littler three darts at double.

But when the 18-year-old failed on both tops and double 10, Rock was back to nail the double 10.

Image source, PDC/Taylor Lanning

For once in this match, Josh Rock has trouble locating the trebles early in the leg.

That allows Luke Littler to streak clear and after missing double six for a 126 out, he returns to hit double three and break.

Ben Ramsdale
BBC Sport

Luke Littler's nine-darter was just the 10th ever nine-darter hit at the World Matchplay.

It was also the first to land at this year's tournament.

The last player to hit a nine-darter in the World Matchplay was Dimitri Van den Bergh in his 2024 first round victory against Martin Schindler.

This is breathless stuff. We have really been treated with these two semi-finals tonight - and it's not done yet.

That Luke Littler nine-darter was stunning - it was quite literally the perfect leg.

Both players hit two 180s before Littler finished off the nine, leaving Jock Rock stranded on 141 and wondering what might have been.

Image source, Getty Images

He might have thought the chance was gone - but Josh Rock breaks back immediately!

Two 180s in the leg give him the break chance but he misses tops twice and Luke Littler is in needing 70.

However, when he misses tops and double 10, Rock is reprieved.

The Northern Irishman finds double 10 and leads the world champion by four legs at the second break.

Wayne Mardle
Former World Championship semi-finalist on Sky Sports

The next five minutes could be absolutely crucial. Josh Rock needs to win one of them.