Gigi Salmon
BBC Radio 5 Live tennis commentator

He was all but down and out but has fought back and we play on.

Write off Andy Murray at your peril!

There's been an epic tie-break going on on court five too.

Some big forehands from Watson gave the lower-ranked Briton four set points.

Konta saved every one of them with her serve repeatedly getting the 29-year-old out of trouble.

The British number one needed just one set point of her own as Watson's cross-court forehand drifted wide of the line to give Konta the lead after an epic hour and 13 minutes.

"Come on!"

It's a cheer we've heard so often over the years, and it's great to hear it again.

Andy Murray, who lost the opening two sets and was 3-1 and a break down in the third and heading out, takes the third set on the tie-break as Nishioka nets with a backhand.

We continue into the fourth.

Nishioka saves the first set point with a serve out wide but now Murray with a set point, on his own serve...6-5

Jamie Delgado likes what he is seeing as Murray regains the lead at 5-4 and then pulls a beautiful forehand on the line. 6-4. Two set points for Murray.

Naomi Broady
British player on BBC Radio 5 Live

There's nothing in this - I can't call who is going to win this tie-break.

Nishioka moves ahead for the first time in this tie-break after a Hawk-Eye call goes against Murray, but the Brit then levels at 4-4.

A great forehand from Murray as he gets his angles spot on for 3-2, but Nishioka then powers away a smash at the net for 3-3.

Nishioka pulls one back with a cross-court winner, before Murray dumps a return into the net. 2-2, tie-break.

Murray takes the first point, then the second as Nishioka sends a backhand wide. Early advantage for Murray. 2-0, tie-break.

The third set is going to be decided by a tie-break.

Both players are looking increasingly edgy as the end of the set draws near.

Watson had the chance to take her first ever set against Konta with two break points.

But the world number 54 looked very tense and could not take either of the chances, with an ace from Konta finishing off the game.

Tie-break here we come...

Naomi Broady
British player on BBC Radio 5 Live

We're starting to see little flickers of Andy's level coming back and he seems to be moving better as well as the match goes on.

He seems to have more energy - and his grunt is getting louder.

30-30 - two points from a Murray set, or two points from a tie-break.

Andy Murray saved one break point in his last service game and now another three in this game to nudge ahead 6-5.

Nishioka to serve and it's either going to be Murray taking the set or a tie-break.

Naomi Broady
British player on BBC Radio 5 Live

Nishioka has very quick feet and takes the ball very early, almost as a half volley, and sometimes Andy hasn't been ready for the ball coming back so quickly.

Nishioka sends Murray running and then tries a delicate drop shot, but it just doesn't have the legs and Murray with a game point. Advantage Murray.

Murray isn't the only one caught in a deadlock.

Heather Watson saves break point to hold serve against Johanna Konta and it looks like we might be heading for a first-set tie-break.

Murray takes a backhand volley out of the sky, sending it back from where Nishioka came and the Japanese man can't spin around quickly enough. Three break points saved.

A third break-point opportunity for Nishioka.