Britain's Lucy Shuker is in action on court three in the women's wheelchair doubles semi-finals, but it's not been a great start unfortunately.

Second seeds Shuker and South Africa's Kgothatso Montjane were broken late in the first set and went on to lose it 6-4 against Japan's Yui Kamiji and American Dana Mathewson.

Paul Hand
BBC Sport commentator at Wimbledon

Alfie Hewett is always an amazing warrior and he's shown such determination in this set having been down and out in the last.

There's no question that Gustavo Fernandez is making mistakes he simply was not making for the first set and a half.

A couple of errant forehands and a couple of Alfie Hewett aces. The Brit holds - he's fought back from 5-1 down to 5-5 in this second set. Fantastic fightback.

Alfie Hewett looks a different player, brimming with confidence.

He's got his first serve back too. 30-0 up, helped by an ace.

Barbora Krejcikova and Katerina Siniakova have struck first in the second set and are closing in on the Wimbledon final!

The Czech 2018 champions, who take their first opportunity to break to 15, have now won eight of the last nine games and will serve for a 3-1 lead next on Centre Court.

That's the sixth break of serve in this second set.

It came courtesy of a fabulous cross-court forehand from Aflie Hewett that Fernandez simply could not reach. Wonderful winner.

The Brit wastes one break-back chance, a forehand return flying wide.

Then an unstoppable Fernandez forehand brings the Argentine back to 30-40. One break point remains.

Nerves creeping in for Fernandez?

A double fault and a long forehand, and it's 0-30. Hewett's not out of this.

Another long Fernandez forehand! 0-40.

Fine margins - how big could this be?

At 40-30, Hewett sends a serve right down the T. It's called out but he challenges and Hawk Eye shows it caught the line.

The Argentine will still have the chance to serve out the match, though, for a place in the final.

A great recovery from Alfie Hewett who was moving the wrong way from Fernandez's return on the opening point.

The Argentine hits a forehand wide - and seems to have done the same in the next point but he challenges and it just kissed the baseline chalk right in the corner.

Hewett though comes back with a good serve and then wins a long rally - 40-15 as he bids to hold serve for the first time this set.

A brilliant returning game from Alfie Hewett keeps the match alive - he earns two break points and only needs one as Gustavo Fernandez goes long.

Peter Norfolk
Seven-time Grand Slam winner on BBC TV

Alfie Hewett needs the crowd behind him - he's had a bit of a mare today. It happens - whatever he's trying it's just not coming off for him.

The end seems nigh.

Alfie Hewett has struggled with his service game all match long, while Gustavo Fernandez has returned supremely.

Image source, Getty Images

That's some finish by Barbora Krejcikova and Katerina Siniakova to take the first set!

It's now six games in a row for the Czech second seeds on Centre Court, as they race clear of Lyudmyla Kichenok and Jeļena Ostapenko after a scrappy start to take charge of the match.

Hewett's umpteenth double fault yields another break point for Fernandez and it seems sure he'll convert with a deep approach.

But Hewett somehow gets it back and forces the error into the net.

Now, an ace and advantage Hewett. But then a big Fernandez return. Deuce again.

You can feel the Court One crowd willing Alfie Hewett on here, even in the silent moments.

But Fernandez has been so strong on return. He's recovered from 40-15 to take Hewett to deuce. Big moments in this match. If the Argentine breaks here, it's surely over.

Peter Norfolk
Seven-time Grand Slam winner on BBC TV

Alfie Hewett is flustered - he needs to calm down and look what he did in that game. That was the game where he finally took it to Gustavo Fernandez. He was nearer to the baseline and taking the ball quicker and earlier.

He has the speed to rally so he's not outclassed by any means on normal terms - if he holds here the scoreboard will look a lot better.

First up on Centre Court is the first of the today's women's doubles semi-finals, with Czech second seeds Barbora Krejcikova and Katerina Siniakova up against Ukrainian Lyudmyla Kichenok and Latvian Jeļena Ostapenko.

It's proving a very even match so far, with each of the five games seeing at least one break point.

Krejcikova and Siniakova lead 3-2 after half an hour, having turned around a 2-0 deficit.

A backhand return down the line converts the second of those three break points.

Alfie Hewett really went for his shots in that game.

But he really needs to up his service game to have a chance of turning this around.

Image source, Getty Images

Three break points for Alfie Hewett.

Gustavo Fernandez's chair topples over as he just about reaches a Hewett forehand and he cannot rescue the winner from the Brit.