180, then a treble 20, then a treble 19... then a single 19.

Luke Littler then gets himself down to 89, while Clayton is stranded on 215 after his throw.

Littler sets up a finish on tops and misses his first two darts at it, then goes inside with his third. Clayton is still not down to a finish after 15 darts.

One dart misses double 10, he pins it with the next.

Three perfect darts from Luke Littler to kick us off. Another 180 later in the leg.

He is a very, very long way ahead of Jonny Clayton as he makes it down to 44. He needs just one dart at tops to take it out.

Here we go!

Here we go, then.

Time for the walk-ons.

Wayne Mardle
Former World Matchplay finalist on Sky Sports

Luke Littler couldn't not react to the crowd - he likes to do that when he's playing well.

Doing that turned the semi-final for him against Luke Humphries.

Littler started showing off after that. When he feels comfortable he's very hard to do business against.

The worst thing for an opponent is seeing Luke Littler enjoying himself.

Wayne Mardle
Former World Matchplay finalist on Sky Sports

Jonny Clayton has been the master of this Premier League at taking opportunities when they come up.

He looks like someone who believes and knows what it takes.

Jonny Clayton averaged just 87.96 in that match, but hit 60% of his doubles.

Josh Rock averaged 94.92, but only had a 25% checkout rate.

Not exactly a thriller, but Clayton shows the importance of being clinical on the outer ring.

Oh, Josh. This isn't the time where you want to be throwing 40s.

Can Jonny Clayton punish him? He is first to get down to a finish, with 148 left. He can't see it off and leaves 56, but rock is back on 208.

A seventh maximum of the match keeps up the pressure, but Clayton doesn't let him back in. 16 and tops wraps it up.

Josh Rock has thrown SIX maximums in this game. And it's a game in which he's averaging just 96. Very inconsistent.

He finishes this one off in style by taking out 142. Treble 17, treble 17, tops.

Glen Durrant
Former Premier League champion on Sky Sports

Sometimes you have to win ugly and that was the reaction from Jonny Clayton there - he's been nowhere near his best.

Josh Rock nearly moves to within a leg of victory. He has 24 left, but goes outside, then inside, then misses the double six.

Jonny Clayton moves back in front by taking out tops.

Jonny Clayton searches for 160 and finds the first treble, but then hits two single 20s.

Josh Rock has 80 left, but hits the single twice before his third dart bounces out.

Clayton wraps up the remaining 60.

Glen Durrant
Former Premier League champion on Sky Sports

He probably doesn't realise it right now, but Josh Rock is learning on the job.

Whatever happens he'll be a much better player for what happens in this Premier League.

Josh Rock is first down to a finish, then Jonny Clayton hits an impressive 116.

Rock nearly takes out 146, but his dart at double 16 goes just outside.

It doesn't matter, though. Rock pins it with the first dart of his next throw.

That's more like it from Josh Rock.

Two 180s in that leg before he eventually sees off 41.

These two were electric in the quarter-finals. Less so in this match.

Jonny Clayton is back in front, but is still averaging in the 80s.

Glen Durrant
Former Premier League champion on Sky Sports

Jonny Clayton will feel like winning the quarter-final was job done and anything else is a bonus. He has felt a little flat in this game.

This one is tight. Josh Rock takes the fourth leg.

He is averaging 92, Jonny Clayton is averaging 88.

Another missed dart on the outer ring from Jonny Clayton, going too high when he requires tops.

Josh Rock misses his double, too, and can't take out 20.

Clayton ends up finishing on double five.