Boom! Draper's forehand has been powered by rocket fuel in Madrid - and he finds another howitzer at the perfect time.

The British number one mixes up his forehand game with a flatter crosscourt return which Ruud sends back but tees up the winner down the line.

Ooof! Ruud cracks a drive volley winner from the baseline for 15-30 but then Draper earns a break point when his opponent buckles in a baseline rally.

Two break points to Draper...

Draper whipping through his service games means it could add a touch of stress in Ruud's mind.

Maybe it has. Ruud slaps a volley into the net and suddenly it's 0-30. This could be a key moment...

No break points yet in this second set.

Jack Draper will hoping there won't be one in this game - and there is little chance of that with serving like this.

Draper finds his serve and his forehand - both crucial weapons for the British number one - in another rapid hold-to-love.

Can Draper create more pressure here? He can't.

Ruud resets once again and a clean forehand winner sticks his nose in front.

While Ruud's first serve has been effective, he has still thrown in a few double faults - two helped Draper break early in the first set remember.

Another crops up to let Draper level at 15-15 before normal service is resumed and he moves 40-15 ahead.

Draper isn't done yet, though. A deep backhand return leaves Ruud in a tangle as the ball clips the baseline... 40-30.

I tell you what, Draper could do with a quick service hold here.

He looks on course to do that, moving 40-0 ahead with a gorgeous drop-shot helping him on the way.

Ruud sticks in a roadblock with a crosscourt forehand winner, but is left stranded out wide when Draper pummels down an overhead for the game.

And here's the evidence... Ruud has won 88% of first serve points. That's 28 out of 32 so far.

You have to take your hat off to Casper Ruud.

No dramas, no stress... he just stays calm and finds his best game when he needs to.

That, at the moment, is revolving around his first serve and finding two more helps him get over the line for 2-1.

Big hold.

Pressure? What pressure?

Ruud slaps down an ace to move ahead and then is buoyed by landing another first serve... however, he plants a smash straight at Draper, who beats him all ends up with a backhand winner.

Back to deuce...

An early glimmer of hope for Draper at 15-30.

"Come on!" he yelps again.

Ruud, a human fire extinguisher, quickly quells the heat with some smart serving and accurate returning to move 40-30 ahead.

But then Draper steps onto the front foot and wallops a forehand which Ruud can only dump into the net.

Deuce....

Excellent from Jack Draper.

The annoyance at losing that first set has fired him up and he's channelled the energy positively into a comfortable hold to love.

In fact, that's his first hold to love of the match.

Good start to his hopes of levelling this final.

That's exactly what Casper Ruud does. A very solid service game is swept up with an ace out wide.

Right, let's see if Jack Draper has got that frustration out of his system...

All the momentum is with Casper Ruud now.

The world number 15 picks up the balls and looks to use the first service game of the second set to create some scoreboard pressure.

Jack Draper is fuming. And I mean fuming.

We don't see this very often from him - he combusts as he sits down, launching into some verbals towards his team.

Coach James Trotman can handle it, I'm sure. As can physio Shane Annun. He used to work for Andy Murray - who barked at his team like a irate security dog - after all.

They know he needs to unload his frustration in order to reset for the second set.

Comeback complete!

An impressive turnaround from Casper Ruud.

Jack Draper is pushed back behind the baseline again and when he tries to come forward gets his feet in a mess.

Draper is tied in a knot, running around almost 360 degrees to hit a forehand - which he balloons into Row Z.

This is excellent from Casper Ruud.

He pins Draper back into the deuce side corner and springs forward to put away a volley the other way.

Set point. Ruud was 5-3 down remember...

"Come on!"

Draper urges more from himself after losing the first point of the 12th game.

That helps the Brit turn the game into his favour at 30-15, but then he can't land another fizzing forehand down the line.

30-30...

Image source, Getty

Draper is not as zen as he was at the last changeover.

He glugs some water and grimaces as he shakes his legs into action.

The British number one is looking to find some extra energy.

For the first time in the match, Draper's level has dropped.

Another forehand from the baseline lacks conviction as Ruud goes 40-15 ahead, before the two-time Roland Garros runner-up finds his spot with a first serve down the middle to leave a stretching Draper wafting.

Ruud leads - for the first time today.