Well, well, well.

Roberto Bautista Agut surrenders his first set of the Championships and we're heading for a fourth set on Court One.

Not many may have seen this coming after Bautista Agut appeared firmly in control at two sets to the good against Guido Pella.

But, as the fighting Argentine proved in the fourth round against Milos Raonic, Pella certainly has the physical and mental stamina to push back when the odds become stacked against him.

An unexpected drop in Bautista Agut's levels - which appear to have now returned to normal - has given Pella more than enough hope of salvaging this match.

Image source, Reuters

Melichar's volley almost rips the strings from Murray's racquet, and the Williams fizzes back a wrist-rattling return of her own.

That's a meaty serve Melichar though, and Murray can't pick it up. The top seeds hold, again.

"Come on Ser-Andy/Murrena" screams one spectator... Andy Murray says Serena Williams is the boss, and she's labeled them "Murrena".

Williams fizzes a return towards the feet of Melichar but the American tip-toes out of the way to let it land long. 30-15.

Image source, Getty Images

Roger Federer has eased into the quarter-final at Wimbledon but the eight-time champion is wary of his next opponent, Japan's Kei Nishikori.

"I think it's going to be tough," he said. "He's getting into quarters with a lot of energy.

"I remember some of the slams recently he arrived into the later stages of slams with maybe some tough matches going into it. So far it's been really easy for him.

"I think he's ready. I'm a big fan of his game. I think he's got one of the best backhands in the game that we have right now.

"He's a great return player. Solid mentally. I always thought he was a great talent."

Danger for the British-American duo at 15-30, until Bruno Soares leaps into a forehand and overcooks it.

Andy Murray glides out of the way of a Nicole Melichar return and watches it drop long, to his relief. A big hold from Serena Williams.

Argh! The top seeds hold, somehow... Melichar does superbly to dish up a backhand after Williams' jab rolls over the tape. Murray goes dashing after it but can't get there in time.

Image source, Reuters

This is brilliant. Some fantastic exchanges on court two, and the noise... that's just from the players.

Bruno Soares is at his subtle best to guide a drop forehand pick-up narrowly over the net, but he then fires off target. Deuce, and if court two had a roof it would have just come off...

It's mixed doubles, but that point was all Serena versus Soares... somehow the Brazilian coaxes a fiery volley back into play but Williams creaks through the gears to zing down a winner moments later. She can't get to a running Soares volley but Murrena have the mini-break - 15-30.

Image source, Getty Images

Murray's serve is sizzling. The former world number one strides forward to meet a short ball and slaps it into the Wimbledon turf. He wraps up a quick love hold.

One to make us amateurs feel better. Serena Williams cracks an overhead into the net. Nicole Melichar then double faults to leave this game balanced at 40-30, but a sliding serve catches Andy Murray unaware and he skips it into the net.

Image source, Reuters

A hold to love for Roberto Bautista Agut.

It's less straightforward for Guido Pella though, as another captivating baseline rally sends Bautista Agut 15-30 ahead.

An ace momentarily saves Pella, but a relentless Bautista Agut forces a break point.

Pella keeps his cool when it matters, volleying at the net to move one game away from taking the set.

That's high from Williams, it has Soares backtracking... but it drops wide, to the Brazilian's relief. Serena spots the space on the next point and whistles a winner past Andy Murray's ear - that almost took his baseball cap off. 15-15.

Spectators try to catch Novak's wristband

Image source, Reuters

"Let's go..." Andy Murray tells Serena WIlliams. But Nicole Melichar is as cool as her shades suggest as she fires a forehand down the Scot's blindside.

Serena steps up the pace, and hammers her way to the hold.

Wowsa. Bruno Soares rocks into another ace that almost cleans out the line judge behind Serena Williams, only to then double fault. He's not lost a point on serve when he's got them in... and that doesn't change as Nicole Melichar slaps away Serena's return to hold.

Some big serving from Andy Murray to open up this second set as he punches his way to 40-0, before a leaping second serve is slapped into the net. A love hold.

Image source, Reuters

A first double-fault of the match for Roberto Bautista Agut. But that's the only sighting he offers to a resurgent Guido Pella, and he's on the board in the third set as a convincing forehand winner paves the way for six successive points.

At love-30 down on his serve, Pella summons a neatly-timed backhand winner before firing a forehand and an ace beyond the reach of Bautista Agut and wraps up the game from the baseline.

As you were.

Novak Djokovic told BBC TV after his win:

"He started well. he was dictating the play from the baseline. Things could have gone a different way, who knows what the match would have looked like if I had lost the first set but I was very pleased with the second and third.

"I had a tough match in the third round. Other than that, I've won in straight sets and played really well throughout the tournament.

"It's exactly what I wanted and hopefully I can go in the right direction in the semis as well."

Image source, Reuters

They only need one... the doubles specialists upset the home crowd by taking the opening set against Andy Murray and Serena Williams.

Andy Murray and Serena Williams are scrambling, but after the Scot duffs a forehand into the net to loud groans from the SW19 crowd it brings up two set points.

Image source, Reuters