A backhand volley from Elena Rybakina keeps her in touch, but Halep finds her serve to reach game point.

Wow. A ninth double fault for Halep as she goes for it on a second serve. Deuce. The crowd offer her some encouragement. She's hanging on by her finger nails.

A huge, lengthy and thrilling game on Court One goes the way of Australian pair Max Purcell and Matthew Ebden.

They saved two break points from 15-40 in a game that featured some exceptional rallies.

Two-time Grand Slam champions Joe Salisbury and Rajeev Ram are serving to stay in the tournament.

When there's a look at a second serve, Simona Halep is taking her chances.

But when Rybakina does connect with a first serve, she's got little hope.

Her fifth ace of the match - her 217th of the season - clinches the hold to take her one game away from the Wimbledon final.

Elena Rybakina isn't showing any signs of nerves just yet as she bends a wicked forehand into the corner.

Simona Halep takes her chance on a second serve, charging forward to fire a forehand away at the net, but Rybakina responds with another devastating serve for game point.

Tracy Austin
Two-time Grand Slam champion on BBC TV

You train yourself as an athlete to not think of the finish line, because if you do you're done. You just have to think about the next points and how you're going to play those points. Elena Rybakina needs to come in on the front foot, she gives Simona Halep time when she sits back.

Simona Halep won't stop fighting until this is over, that much we know.

She comes roaring back from the disappointment of her last service game to secure a love hold and maintain pressure on Rybakina.

This is some comeback from Aussie pair Max Purcell and Matthew Ebden.

From two sets down, having saved five match points, they now have the men's doubles semi-final firmly in their own hands.

A big break of serve early in the deciding set for the Australians. What do Joe Salisbury and Rajeev Ram have left? They must hold now at 4-1 down or it's game over, surely.

Tracy Austin
Two-time Grand Slam champion on BBC TV

What a service game - Elena Rybakina was broken in the last service game, she played a little sloppy. Her coach is shouting 'this one, right now is the moment'.

No pressure!

Superb serving from Elena Rybakina. An ace gets her started and another powerful first serve moves her 30-15 up.

A final ace seals the deal. That's an emphatic response to being broken for the first time in her previous game.

The first-time major semi-finalist is two games away from a first Slam final!

Kim Clijsters
Four-time Grand Slam champion on BBC TV

There is so much pressure - you start to overthink everything at this point and it's a lot harder than it seems when you're not in the right rhythm.

Ah. Another double fault from Simona Halep at another terrible moment.

After finally finding a breakthrough, Halep falters. A third successive break of serve, and once again Rybakina is in charge.

Image source, Getty Images

Elena Rybakina forces Simona Halep to chase a ball out wide and is then primed at the net to volley home as the Romanian digs out a return.

Break point.

A seventh double fault of the match from Simona Halep brings Elena Rybakina to 15-15.

Both players are struggling for rhythm at the moment, but Halep sends a backhand wide. 30-30.

Kim Clijsters
Four-time Grand Slam champion on BBC TV

There is a little bit of a momentum change at the moment.

Wow! Out of nowhere, Elena Rybakina hands a break back to Simona Halep with a really loose game.

She had made nine unforced errors prior to this game. That figure now stands at 13.

A huge confidence-boost for Halep.

Now then, this can certainly be considered a chance for Simona Halep. A rare look at the Rybakina serve at 0-30.

A third unforced error!

Three break points..

Kim Clijsters
Four-time Grand Slam champion on BBC TV

That was an important game for Simona Halep to win to stay close enough to Elena Rybakina - she needs to stay in it because once you get to that last stage of the set when the nerves start to crawl in maybe she will have a better chance to break.

Simona Halep can't afford any more mistakes on serve now.

A hold is required before she can think about applying some pressure on her opponent's serve and creating a first break point opportunity, and she manages to do just that.

She picks off Rybakina with consecutive winners to take charge and holds relatively comfortably to 15 to remain in touch.

Nicely done by Simona Halep, who steps up to wrong-foot Elena Rybakina with a forehand for 40-30, but Rybakina consolidates her early advantage.

The 17th seed has won 77% of points on her first serve so far, with two aces and no double faults.

Ram and Salisbury saved three set points on the American's serve.

But they could not save a fourth.

We're into a deciding set after three hours and 24 minutes of the first men's doubles semi-final.

Britain's Salisbury has lost semi-finals here in 2018 and 2021. Can he and Ram reverse the momentum? They had five match points in the third-set tie-break, remember.