Konta is not the only Briton in action right now - over on court one Joe Salisbury is playing his men's doubles third-round match with American Rajeev Ram.

The 11th seeds are a break down to eighth seeds Henri Kontinen and John Peers early in the first set, trailing 3-1.

Plenty of time to turn things round, though.

Naomi Cavaday
BBC Radio 5 live tennis commentator at Roland Garros

I think that Johanna Konta needs to ride out this little run of form from Donna Vekic. The Croat has a reputation of being a little flashy, but inconsistent. It might not last long.

The Union Jack flag which is on display at the top of the court has got caught in a tree. Hopefully it's not a bad omen.

Vekic has got just 12 of 33 first serves in in this match so far. If she sorts that out, it could be dangerous for Konta.

I'm not sure Vekic has got a first serve in in this game. She still manages to hold to love, though.

Vekic looks frustrated as another first serve goes into the net. She wins the point, but has another chat with her box about it.

Konta grabs control back, though. The 28-year-old shows great composure to hold.

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Konta is caught out at the net, then double faults and Vekic takes control of the game.

But the Croat hits the ball long on the next point. 30-30.

Jonathan Jurejko
BBC Sport at Roland Garros

Vekic continues to chunter at her box in an expressive manner.

Konta, whose mantra under new coach Dimitri Zavialoff is having “autonomy” on court, has barely exchanged a glance with her team.

Konta hits the ball wide on the next point and Vekic gets her second hold of the match.

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Looks like Vekic isn't letting this one go without a fight. To be expected.

The 23rd seed goes 40-0 up, but Konta comes to the net and hits a forehand cross court to get her first point of the second set.

Image source, Getty Images

Jonathan Jurejko
BBC Sport at Roland Garros

Serious clutch play from Jo Ko. Whopping winners and splendid serving sees off the danger.

Not too many vocal Brits here - probably too hot for our pasty people (me included) - but those who are here certainly made their pleasure heard.

Donna Vekic's first-serve percentage was only 37% in that first set. Johanna Konta's was up at 77%.

Konta also served three aces and hit 15 winners. Not bad...

Russell Fuller
BBC tennis correspondent at Roland Garros

It has been another exceptional good performance from Johanna Konta. She has just been too good for Vekic in the 38 minutes of this set.

Well it didn't come easy, but Konta eventually closes out the set with an ace.

Halfway to her first French Open quarter-final.

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A double fault gives Vekic her fourth break point of this game.

Needless to say, Konta is struggling to close this one out. The Brit fist pumps as she hits a cross-court forehand to bring it back to deuce again.

Vekic hits a ball wide and Konta is one point from winning the set.

Konta is on the ropes, but ducks out of Vekic's grasp again! Back to deuce.

Konta saves the break with her second ace of the match. Vekic has won just one of six break points she's had so far.

Another fault gives the Croat another go, though.

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But Konta wobbles again. After an almost perfect serve, she hits her next shot long. Another break point for Vekic.

What a shot! A backhand down the line means Konta saves break point.