Raducanu is stepping in a little more, trying to counter-punch her way through, but a long rally goes the way of Vondrousova for a 30-15 lead.

There's a brief hint of a sniff for Raducanu as Vondrousova double faults, but she just misses out on a return of serve, and Vondrousova closes the game out with a forehand winner and a celebratory cry.

Vondrousova is a game away from taking the first set.

Sonia Oxley
BBC Sport in Prague

On the outside of the large hard-court stadium that is also in this Prague tennis club, the wall of honours is bursting with Czech names (unsurprising given for example they are 11-time winners of the Fed Cup and right now have eight women in the top 100).

Among the names is a certain Marketa Vondrousova, who reached the 2019 French Open final.

Image source, BBC Sport

What a drop shot that is from Marketa Vondrousova!

This time Raducanu gets to the Vondrousova drop shot, but she covers her face with her hand as she can only flick the ball into the net tape.

Vondrousova paints the lines with a sumptuous cross-court swipe to edge ahead at 15-30, and suddenly Raducanu is facing down two break points...

Naomi Broady
British player on BBC TV

Raducanu has just upped her aggression, staying closer to the baseline and trying to dictate the rally.

Into the net goes Marketa Vondrousova!

Emma Raducanu is on the board.

Back-to-back drop shots from Vondrousova!

Raducanu, camped on the baseline, can't scamper there in time.

30-40.

Shot!

A glorious drop shot from Marketa Vondrousova gets her on the board, but it's still 15-40.

Is this a chance for Raducanu?

A Vondrousova double fault hurries the Briton to a 0-30 lead, and a lovely winner down the line hands her three break back points.

Naomi Broady
British player on BBC TV

That's the game Vondrousova makes you play. The longer you stay on court with her, she makes you overplay and that's what we've seen Raducanu do there.

Vondrousova also exposes your movement on a clay court, dragging you right off the court.

Another error comes flying off Emma Raducanu's racquet, and Marketa Vondrousova strides back to her chair, a double break safely under her belt.

Terrific variety from Vondrousova, who isn't giving Raducanu any time to get into rhythm.

A huge double fault from Raducanu and she's facing down three break points once again...

Naomi Broady
British player on BBC TV

Raducanu is just trying to figure out her opponent and how the ball is coming at her, with Vondrousova being a leftie.

No surprise that Vondrousova is coming out and being solid from the get-go.

Vondrousova has such beautiful touch at the net, sliding forwards to send a volley spinning over.

She changes direction in a rally, battering a forehand through Raducanu's defences, and an ace takes her to 40-15.

Another wonky Raducanu forehand hurries Vondrousova along to a hold.

Naomi Broady
British player on BBC TV

I think Emma Raducanu would have taken a lot of confidence and belief from yesterday's match.

As the match went on she started to find a lot more variation. She was figuring out on the clay court which shots were more effective.

Raducanu aims down the line - and misses!

The first break goes the way of the Czech Republic.

Raducanu goes out wide with a second serve and a flat-footed Vondrousova nets.

30-40.

Nice from Raducanu, who picks an excellent time to unfurl a drop shot that even Vondrousova can't return cleanly.

15-40.

A long rally first up, and it's Emma Raducanu who eventually blinks first.

Trouble straight away here for Raducanu as she passed beautifully by Marketa Vondrousova, who earns herself three break points.

Emma Raducanu will serve first to get this tie under way.

Ready?

Play.