Maximum number 11 leaves double 15 for Luke Littler.

Martin Lukeman gets a sniff at 170 but the second dart at treble 20 is off target.

Littler finds the green bit and is now only four legs away from an astonishing victory.

Luke Littler is cruising to the finish line here.

With 196 left, he goes treble 20, treble 20, treble 12 to leave tops, which he takes out at the first attempt.

Wayne Mardle
Former World Championship semi-finalist on Sky Sports

In these 10 legs on the spin, Martin Lukeman has only had one dart at a double and that was to take out 142.

Martin Lukeman has only had three darts at a double in this entire contest, and only one in the 10 consecutive legs that Luke Littler has won.

Littler's latest success comes courtesy of a 78 checkout, finished with his second dart at double 12.

After struggling on it early on, Luke Littler is even hitting double 10 now.

His three-dart average is over 111, almost 20 points higher than his opponent.

In more positive news for Martin Lukeman supporters, Scott Waites was 8-0 down in the 2010 final and came back to beat James Wade 16-12.

It's a horrible thing to mention on occasions like this, but the record win in a Grand Slam final is Phil Taylor's 16-2 victory over Scott Waites in 2009.

The neutrals will be desperate for Martin Lukeman to make a game of this, but at the moment Luke Littler just looks far too strong.

Martin Lukeman gets a look at double 11 for a 124 checkout, but it's just wide of the mark.

Luke Littler cleans up on tops and he leads 8-2.

There's a slightly resigned look on Lukeman's face as Littler strides away confidently for a break.

"Merciless" and "brutal" are just a couple of the words used by the Sky Sports commentary team to describe this performance by Luke Littler.

Seven legs on the spin now.

A couple more misses on the outer ring for Luke Littler, but in truth it is not mattering too much because he's scoring so well.

A critical few minutes ahead for Martin Lukeman, who needs to stop the Littler surge before he's too far out of sight.

Wayne Mardle
Former World Championship semi-finalist on Sky Sports

Martin Lukeman has to hold on his next throw. It's got to that stage already for me.

He's regressed to some tune since those first two legs.

The pair exchange 180s but Luke Littler gets to a finish first.

It takes him a while to get the job done, but he does, and that's five legs in a row.

After the fireworks of the first five legs, a fairly sedate start to the second mini-session.

Luke Littler holds throw, Martin Lukeman miles back as the youngster takes out 74.

Dan Dawson
Commentator on Sky Sports

Luke Littler looks satisfied with that start.

And he should be. Five 180s and a three-dart average of 116.33 in those first five legs by the tournament favourite.

The Wolverhampton crowd serenade Luke Littler with the same song they used to sing about Phil Taylor for all those years.

The 17-year-old responds with yet another maximum - he's hit one in all of the first five legs - and he takes out 81 for an 11-darter to take the lead for the first time in the final.

The players head for a quick break.

Wayne Mardle
Former World Championship semi-finalist on Sky Sports

This is sublime from Luke Littler.

Luke Littler begins the leg with another 180 and takes out 124 on double top to level it up.

Three legs, three 180s for Luke Littler.

Again double 10 isn't his friend, but the double five is landed and the teenager is on the board.

Wayne Mardle
Former World Championship semi-finalist on Sky Sports

Martin Lukeman looks good. Winning the first leg on his throw meant he could attack the Littler throw rather than being hopeful.

Luke Littler bangs in his second 180 of the match - and his 50th maximum of the tournament - but he misses two darts at his favourite double 10.

And that allows Martin Lukeman to step in and break the throw.

A great start by the underdog in this final.