Bright young thing Dominic Thiem, the eighth seed, finds himself a set down against Gilles Simon of France on Court One. However, the Austrian is a break up in the second set. You can follow their match here.

It's still going with serve on court 12 between Tomas Berdych and Ryan Harrison. You can watch here.

In the women's side of the draw, Agnieszka Radwanska has made a remarkable recovery. She saved match point in the second set and now Christina McHale is serving to stay in the contest on court two.

Image source, Getty Images

Karolina Pliskova is 7/2 favourite at the bookies for this title and you can certainly see why. She impressed in that first set.

Andy Murray and Rafael Nadal have faced an odd signature request after one fan asked them both to sign his prosthetic leg.

Impressive stuff. Karolina Pliskova is laying down a marker in the women's draw here.

She takes the first set in a game punctuated by more driving shots from deep. She looks in great nick.

Ellie Thomason
BBC Sport at Wimbledon

Marcus Willis might have missed out on a place in the main singles draw this year, but he's still definitely a fans' favourite.

He's been spending time signing autographs and taking photos with fans near the practice courts

Speaking to Newsbeat's Simon Mundie on our Facebook page, Willis spoke about life after last year's Wimbledon heroics, his coaching and how he's interested in taking up commentating.

You can watch that interview here here., external

Image source, BBC Sport

Image source, BBC Sport

A sweltering day on Centre Court. Both players glistening under an ocean of blue sky. We were warned of thunderstorms. Not a whiff of rain.

An unfortunate net cord hands Karolina Pliskova a break point and she cashes in, a thumping forehand into the shins of Magdalena Rybarikova and she can't get the return in.

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McEnroe and Henman will be on air on 5 live straight after Federer's match against Lajovic has finished on Centre Court.

Novak Djokovic told the BBC: "Overall I managed to impose my own rhythm and play the game I intended to play.

"It was very warm and hot and not easy to play point after point in some of the long rallies."

Without Serena Williams has Karolina Pliskova got the biggest serve in women's tennis? She is tall, it comes down hard from high and it's extremely well placed as well.

Not many free points coming up as the number three seed holds easily again.

Image source, EPA

Roger Federer follows this match on Centre but he may have a lengthy wait. These two have started very well indeed, both playing great shots around the net and Karolina Pliskova absolutely nailing the ball from deep as well.

Magdalena Rybarikova is having to work hard on her own serve but has a mix of shots to keep in the game. A 15-shot rally goes her way as she holds again.

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Karolina Pliskova is rifling through service games at a rate of knots. It's an impressive start from the number three seed.

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What a tournament Heather Watson is having!

Into the third round in the singles and now she's won the all-British women's doubles match alongside Naomi Broady.

The pair beat Harriet Dart and Katy Dunne 7-5 6-4.

Jamie Murray has also made a positive start to his men's doubles campaign. He and Bruno Soares are third seeds this year and have taken the first set on a tie-break against Jiri Vesley and Roman Jebavy.

Get plenty of calcium.Be kind to knees, you'll miss them when they're gone.

Etc.

Image source, Reuters

It's sure hot out there as plenty of patrons come back in from a bar break during the changeover.

Rybarikova finds a gem of a lob to make it 2-2.

There's no such drama in Karolina Pliskova's service game. She rocks through it.

Apparently the court surface was measured between matches and was 43C!

Wow.

Juan Martin del Potro is on the brink.

He's trailing by two sets and the third has gone to a tie-break against Ernests Gulbis.

Watch it here.

Image source, Reuters

What a game!

Karolina Pliskova is the world's number one player this year and you can see why. She has all the shots, moving Magdalena Rybarikova around the court at will. But she can move...

Rybarikova saves four break points, one with a gem of a disguised drop shot, and shows some great touch around the net.

Centre Court is pretty empty as people take a break before Federer. But this could be the match of the day.

This second game ticks past 10 minutes, seven deuces, before Rybarikova finally holds.

Agnieszka Radwanska was up against it facing two match points but she saved both of those and then won the tie-break.

As the commentator says, "surrender is not a word that exists for Radwanska."

Image source, Getty Images

John Isner is out!

The 23rd seed has lost a thriller 7-6 (7-5) 6-7 (5-7) 7-5 6-7 (5-7) 3-6 against Israel's Dudi Sela in three hours 51 minutes.

Eighth seed Dominic Thiem was trailing 4-1 against Giles Simon on Court One but has levelled again at 4-4.

Juan Martin del Potro is still fighting. He's leading 6-5 in the third set against Ernests Gulbis but still trails by two sets to one.