Behind the umpire's chair? Beneath the scoreboard? Under Sir Richard Branson's Royal Box throne?

Nope, there is nowhere to hide on Centre Court. Jo-Wilfried Tsonga could do with one.

Djokovic dishes out a hold to love and is revving right in the red zone form wise.

Novak Djokovic is straining at the leash, itching to get into the Jo-Wilfried Tsonga serve.

A rifled return is approved via Hawk-Eye to take the top seed to 15-15. He climbs into a second serve to get to 30-30. The rest though is all what that terrier-like aggression does to Tsonga.

The Frenchmen crumples a backhand, stuttering through the backswing and flopping into the net to give Djokovic a break point.

As he tries to show his teeth, get on the front foot, turn up the volume - all those positive things - Tsonga plonks an over-eager forehand long to concede the game.

Maria Sharapova and Angelique Kerber will be forced to wait another day to play their fourth-round match. They were due to be last on Court One, but will now not begin until tomorrow.

As a result, if one of that pair reaches the semi-finals, they will have to play three games in three days.

Andy Murray on having a clock to time players between points: "A timer is the only way to go. How, as a player, are you supposed to know how long 20 or 25 seconds is between points? It's not something I ever think about.

"Sometimes the umpire tells you you're two or three seconds over. When it's 4-4 in the fifth set and you've played a 30-shot rally, you're not thinking about how long you're taking.

"If it would be right there for everyone to see, there can be no arguments from the players."

John Lloyd
Former British number one on BBC TV

"Tsonga has to stay patient, take care of business on his own serve and be patient on Djokovic's serve. He has to keep faith that he might get one chance on Djokovic's serve and take it, if that happens."

Grigor Dimitrov speaking to the BBC following his 6-4 7-6 6-2 win over Leonardo Mayer: "It's pretty tricky out there. My movement was pretty good but there were still spots which were slippery and the balls weren't bouncing great but it is what it is and you have to take it.

"Luckily we were only away for 45 minutes, which isn't enough time to cool down, it was long enough to get some food and think about what I needed to do better and chat to my coach and it was enough for me.

"My quarter-final match is something I have been waiting for for a very long time. I think my hard work is paying off, and I am really excited to be playing on centre court."

Another Novak Djokovic service game whistles by, well out of Jo-Wilfried Tsonga's reach.

Any hope that the Frenchman had of making a breakthrough are snuffed out like a candle in a vacuum.

More from Andy Murray: "I feel good, I haven't played too many long matches. I've played some long rallies and physically I've been moving well. I haven't had to use loads of energy yet, but I'm aware that it will come.

"I don't compare years. You play different opponents. It's just different."

Image source, Getty Images

Jo-Wilfried Tsonga keep the sets bubbling on serve. Even in the number of games in the second, but Novak Djokovic is ahead in the mood music that surrounds them.

Andy Murray on Sir Alex Ferguson, who was in the Royal Box today: "We chat about a lot of things, about football and the World Cup.

"But, he also said a few things that he's observed, mental things about how to respond to tight situations. You're always going to listen to someone like him because he's witnessed so many tight sporting occasions and he knows his stuff."

You can imagine that after a nuclear winter, Novak Djokovic would be the only man around to keep the cockroaches company. Something indestructible and irresistible about the man. He holds up his end in solid style.

Image source, AFP

Jo-Wilfried Tsonga faces down a strong challenge from Novak Djokovic, holding to 30.

At the end of the game a Mexican wave whirls around the stands, with hearty participation from those in the Royal Box.

Gus O'Donnell, former cabinet secretary, is one of those in the posh seats. Wonder he ever got the government ministers to give it a go under 'any other business' round the mahogany table?

More from Andy Murray: "Sometimes the scheduling and the weather works in your favour, but it's worked against me many times too. You just have to get on with it.

"Someone told me that Martina Navratilova once played 17 games in the second week, so we have it pretty good."

John Lloyd
Former British number one on BBC TV

"Tsonga has to go after Novak Djokovic here, there is no other way if he is to win this match."

BBC Sport's Sam Sheringham on Court One

Image source, Reuters

"Dimitrov fights back from 0-30 to hold serve and set up a mouth-watering quarter-final with Andy Murray. Ominously for the British number one, the Bulgarian's reaction is one of a man with unfinished business at this tournament. A brief fist-pump and a wave, a pause for some autographs then a confident stride towards the locker room. A job well done for the emerging star of men's tennis."

Andy Murray on his straight-sets win over Kevin Anderson: "Everything was going my way when we stopped, but it's different conditions under the roof. Most players will tell you there's a big difference. It changes the way the court plays. He started hitting the ball cleaner.

"But, I still did well, I was just a little more tentative and he was going for his shots a little more.

"They should always try to play with the roof open because it's an outdoor event.

"I knew I would be tested at some point and today I was pushed."

Jo-Wilfried Tsonga comes all guns blazing on his own serve, but he has little more than a peashooter to trouble Novak Djokovic when the balls are up the top seed's end of the court.

The Frenchman is down at 17 in the world after a mixed bag of a year. Does he have the confidence to really believe he take down the draw's top man?

Novak Djokovic hits a dead-eyed skidding pass across court to ask some questions, but Jo-Wilfried Tsonga is in full bully-boy mode, pummelling his way to the opening game of the second set.

They are reeling through the games by the way. We are still inside the first half hour.

Image source, Getty Images

When a point really matters there is only one winner.

Novak Djokovic racks up 40-0 and three set points. He cuffs the first into the net and Jo-Wilfried Tsonga's walloped return salvages the second. But they don't get any more conclusive than the third.

A whipped ace blurs through Tsonga's side of the court. The French 14th seed sticks a racquet out, but, like a tailender facing pace in fading light, it is all arms and no feet. The ball streaks through without a sniff of string and that is the set.

BBC Sport's Sam Sheringham on Court One

Dimitrov breaks again and the fat lady is tuning up. Meanwhile, we've just had by far the biggest cheer of the match. A wicked slice of the frame of Mayer's racquet sails skywards towards the crowd and is perfectly plucked two-handed by a man in a purple jumper. Any more catches like that and he'll be worth a place in the England cricket team.