Sue Thearle
Tennis commentator on BBC Red Button

That feels like the reset button has been pretty emphatically pressed.

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A perfect start to this second set from Rebecca Sramkova, who races through to a love hold.

Olga Savchuk
Ukrainian former player on BBC Red Button

The score on the screen looks quite easy but we all know it's not as easy and Katie Boulter had to produce some real quality to win the set.

In the short gap between Emma Raducanu's victory and Katie Boulter's match, the pair were able to exchange a few words.

In Boulter's last win, she said Raducanu had asked her to slow things down so she could return to the bench and watch some of the British number one's match.

If Boulter keeps going at this rate, then there might not be much of a chance for her team-mate to finish her warm-down and media duties.

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Yes she can! Katie Boulter wraps up the first set in style, sending a blistering ace - her first of the match - past Rebecca Sramkova.

Rebecca Sramkova jumps up and down frustration as she slams the ball into the net and hands her opponent another set point.

Can Katie Boulter get this set over and done with now?

And the same thing happens on the second second point as Katie Boulter finds the net again. Deuce.

Katie Boulter fires a backhand into the fence.

Set point number two.

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Olga Savchuk
Ukrainian former player on BBC Red Button

I'm really impressed to see there is absolutely zero hesitation from Boulter's racquet. She's really going for it, knowing the importance of this moment but still trusting her shots. It's always good to see under pressure and that's made an impact on her game so far this year.

Rebecca Sramkova claws a point back as Katie Boulter finds the net, but the favour is returned by the Slovak on the next point.

Two set points.

Katie Boulter is pumped up. After every point won, she raises a clenched fist towards the Great Britain bench.

She wrongfoots Rebecca Sramkova with a fiery forehand winner for a 30-0 lead.

Sue Thearle
Tennis commentator on BBC Red Button

Boulter's got the double break and the reaction tells you much. She is dialled in right now and in position A in this opening set to pile even more pressure on Slovakia.

So far, so very good for Katie Boulter. She hasn't really put a foot wrong, a little bit of shakiness on her serve in the early stages, but the game plan is certainly to up the ante on forehand aggression and definitely target that backhand of Sramkova's, which has coughed up a few errors.

Rebecca Sramkova sends down a solid serve that Katie Boulter can't do much about, but there's a massive celebratory roar from the British number one on the next point as her opponent goes long.

Anne Keothavong nods her head in approval as Boulter returns to her chair.

She's one game away from the first set.

Sue Thearle
Tennis commentator on BBC Red Button

It's an important hold, they all are. It's so tight in this second match of the semi-final, it's a precious lead that Katie Boulter has and she's preserving it carefully.

What a rocket of a return that is from Katie Boulter, sending Rebecca Sramkova's serve right back where it came from.

And, all of a sudden, she's got two break points.

Katie Boulter shakes her racquet in a small celebration as Rebecca Sramkova sends a forehand wide.

The British number one is looking a whole lot more comfortable on serve and she gets the hold done and dusted with a hefty second serve that Sramkova whacks off court.

Olga Savchuk
Ukrainian former player on BBC Red Button

It's a much cleaner performance from Katie Boulter so far. She is doing all of the right things, really attacking the forehand of Sramkova and trying to dictate points. She is using the speed of the court well.

Rebecca Sramkova wins the first two points on her serve, but Katie Boulter commands a lengthy rally - waiting patiently for her opponent to make the first mistake. 15-30.

There's no stopping that ace, though, and Boulter can only send the next serve into the net.

Olga Savchuk
Ukrainian former player on BBC Red Button

So far Boulter is playing all of the right tactics, she is trying to attack Sramkova's body, especially on the forehand side, she is taking that time away with the big swing Sramkova has.

When she has a chance, she is really going for it.

That's better from Katie Boulter, who flings a forehand winner down while Rebecca Sramkova remains rooted to the spot.

And there's the hold. A big one. Sramkova can't turn the return of serve back onto the court.

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