Put anyone up against this Novak Djokovic and they'd struggle. He's been effortlessly brilliant and he wraps up the second set with another break.

Have to feel for Stan Wawrinka, it feels like there's very little he can do to stop his imperious opponent.

A rare double fault by Novak Djokovic and it is 40-15 but he then rattles off an ace down the middle and he's a game away from taking this second set.

I mean, what can you do? Stan Wawrinka hasn't played great but his cause is not helped as Novak Djokovic sweeps a pinpoint forehand that just bounces in and he's 30-0 up on his serve.

Chris Bradnam
BBC Sport commentator at Wimbledon

It's clinical. Djokovic is just making it look so easy, whatever he does. And he's done everything.

More good stuff from Novak Djokovic up at the net, sealing his first point of the game after some great reaction returns from close range.

Stan Wawrinka digs deep, though, despite Djokovic battling to deuce and threatening another break but the Swiss is up and running in this second set.

Michael Emons
BBC Sport at Wimbledon

Djokovic is playing like a man who is in a rush and doesn't want to have to come back tomorrow and finish the job off.

He absolutely races through his service game to move 4-0 up in the second set and with a double break in the bag.

The final curfew is 11pm (23:00 BST), but, as we saw yesterday in the match between Andy Murray and Stefanos Tsitsipas, that will be earlier if they all decide it is the fairest option to halt it at a specific moment, such as at the end of a set.

There's more empty seats than you'd expect on Centre Court for a match between two multiple Grand Slam winners, but then again it is not too far short of 10pm on a Friday night.

At the baseline, up at the net - no matter where Novak Djokovic is Stan Wawrinka seems unable to catch him out.

He kicks off this fourth game with a winner at the net before nailing a couple of aces on his way to a comfortable hold.

There has been a real shock in the mixed doubles as the winners in the past two years, Neal Skupski and Desirae Krawczyk, have gone out in the first round.

Briton Skupski and American Krawczyk, seeded second, lost 4-6 7-6 (10-8) 6-4 to Belgian Joran Vliegen and China's Xu Yifan

They move on to play the girlfriend-boyfriend partnership of Briton Katie Boulter and Australian Alex de Minaur, who won their opener earlier this evening.

John McEnroe
Three-time Wimbledon singles champion on BBC TV

It feels like someone told Djokovic it was a 10 o'clock curfew. He's on a roll.

Image source, Getty Images

Just 52 minutes on the clock and Novak Djokovic is storming towards a third round win as he wraps up a second break of this set.

No danger of needing the 11pm curfew at this rate.

Stan Wawrinka wipes his brow and puffs out his cheeks as he sends a shot long to hand Novak Djokovic another break point.

Blistering stuff from Novak Djokovic as he breezes through his service game, playing some excellent shots along the way - the highlight of which was a sweeping cross-court forehand into the corner as he holds to love.

John McEnroe
Three-time Wimbledon singles champion on BBC TV

Stan is making life difficult for himself with this poor first serve percentage.

You are playing the best returner in history. Do you think for one minute you are going to beat him with that percentage?

Image source, Getty Images

Novak Djokovic pulls it back to 30-30 and then a scruffy backhand by Stan Wawrinka puts him a break point down.

The crowd offers up some encouragement to Wawrinka - they don't want to see this wrapped up quickly - and he gets back to deuce.

Wawrinka saves another break point but is left scrambling to unsuccessfully make a return at the net and this Djokovic gets the job done to seal an early break in this second set.

Tough times for Wawrinka.

The sun is setting but the heat remains and you can see the sweat on both players.

Stan Wawrinka takes the first point of this second set before a slip deep behind the baseline by Novak Djokovic leaves him struggling as Wawrinka makes it 30-0.

A volley seals the next point for Novak Djokovic and he has two set points. He gets the job done at the first time of asking, drawing Stan Wawrinka in with a delicate forehand before then lifting the ball over his opponent and to the back of the court to seal the first set in 37 minutes.

A gift for Novak Djokovic as Stan Wawrinka comes to the net but then puts too much power into his forehand and sends it long.

He then puts a return from the baseline into the net and Djokovic leads 30-15.

John McEnroe
Three-time Wimbledon singles champion on BBC TV

At the moment Wawrinka is not winning enough easy points or free points.

Stan Wawrinka's first serve needs to improve, he's only making 38% of them. It makes his service game more uncomfortable than it should be but he just about edges out Novak Djokovic, who will now serve for the first set.

Stan Wawrinka puts up a bit of a fight, keeping Novak Djokovic honest with a strong backhand off Djokovic's second serve to make it 30-30, but Wawrinka hits his next shot wide before Djokovic sends a volley out of reach to hold.