Elizabeth Hudson
BBC Sport's Paralympics reporter in Rio

So, what can I tell you about Sun Gang, the man who Piers Gilliver needs to beat to win gold in the Epee A final?

He is the world champion, having beaten Gilliver in the final last year, is aged 23 and left-handed and is also accomplished in the Foil event, where he won silver at the Worlds.

"Sun is a very good fencer," Gilliver's team-mate Gemma Collis tells me. "It's probablly going to be a tense match because it is always tight between the two of them.

"They both have a long reach and are both quick so I think it will come down to who deals best with the fact that they are in a Paralympic final and brings their A-game."

Ellie Simmonds shows great strength to chase down her younger rival Ellie Robinson to take the bronze medal. 

Robinson slows up as she finishes behind the five -time Paralympic gold medallist in fourth. 

A great effort from the 15 year-old, who is certainly one to watch out for in Tokyo in four years time. 

Simmonds doesn't look happy but Yelyzvata Meresko of the Ukraine was too strong for the rest of the field, taking the gold medal in a new Paralympic record of 5:17.01 with China's Lingling Song settling for silver in 5:21. 

At the 200m turn, it's Mereshko of the Ukraine in front. 

And it's the younger Ellie going strong for bronze ahead of Simmonds. 

Image source, Getty Images

Meanwhile, the two Ellies, Robinson and Simmonds line up for their S6 400m freestyle. 

They throw off those large GB swim coats and shake off ready for their swim. 

It's about to go down. 

Piers Gilliver is bidding to be the first Briton to win wheelchair fencing gold since Caz Walton triumphed in the Epee event in Seoul in 1988.

She is here at the Carioca Arena hoping to see history made, as are Gilliver's brother Miles, who is a dancer with the Birmingham Royal Ballet, and his grandfather John.

Gilliver is going for gold in around 10 minutes...

Image source, BBC Sport

So how do GB's two Ellies compare? 

The only real factor is age and experience. Ellie Simmonds came to the fore at the Beijing 2008 Paralympics, when she won two gold medals at the age of 13. 

Simmonds now has a total of five Paralympic golds and 10 world titles to her name. 

Image source, Getty Images

On the other side of the pool, Ellie Robinson has a long way to go. 

But the 15 -year-old Northampton school girl has made an epic start by winning gold on her Paralympics debut in Rio - in the S6 50m butterfly.

Certainly one to watch over the next four years. 

Image source, Getty Images

Elizabeth Hudson
BBC Sport's Paralympics reporter in Rio

Piers Gilliver had a battle in his semi-final against Iraq's Zainbulabdeen Al-Madhkoori coming from 7-4 down to win 15-10.

Rio is his first Paralympics but he has European and World honours to his name at the tender age of 21.

Teammate Gemma Collis, who was among those cheering him on after she finished eighth in the women's Epee A event, said she was proud of her teammate.

Image source, BBC Sport

"He dealt with the pressure in that semi-final. We were a bit worried early on but he kept calm and came through. I'm so proud," she said.

"That's the sort of fencer he is, he has been in so many tight situations and he always keeps his head and I'm so excited for the final."

Gilliver's final is coming up at 21:47 BST.   

Here we go again. 

It's old(ish) school versus the new school. It's champion versus champion. 

We're talking about GB's two golden girls Ellie Simmonds and Ellie Robinson. 

They're up soon in the pool but which one will grab their second gold medal of the games? 

Image source, BBC Sport

Wheelchair basketball is a fast-paced game for athletes of all physical impairments. 

Each player is given a points rating from 1.0 to 4.5. The higher the number, the lower the impairment. 

To ensure a team has no unfair physical advantage, the five players on court must not exceed a total of 14.0 points combined. 

Players must bounce the ball after every two pushes but at this level, players often dribble the ball continuously to avoid being penalised for travelling. 

Image source, BBC Sport

Comedian Johnny Vegas is backing the British women in the wheelchair basketball...

In around 15 minutes' time, GB women will get their wheelchair basketball quarter-final underway against China.

The Brits are firm favourites in this one and they have already beaten Paralympic cham­pions Germany in the group stages.

GB's men are bossing it on the tennis courts. 

Gordon Reid and Alfie Hewett - who paired up to win the Wimbledon doubles title earlier this year - are both through to the semi-finals of the men's wheelchair singles.

Scotsman Reid, 24, won 2-6 7-6 6-1 against Gustavo Fernandez of Argentina in his quarter-final, while 18-year-old Hewett overcame Sweden's Stefan Olsson 6-1 2-6 6-3. 

There's no rest for these two, though. They're back out in the doubles semi-final at around 21:00 BST.

Image source, Getty Images

Two-time Paralympic wheelchair tennis champion Peter Norfolk is celebrating from afar following GB's bronze medal in the quad doubles...

GB's archer David Phillips has been beaten by Ebrahim Ranjbarkivaj.

The 50-year-old Welshman made a great start as he beat Brazilian home favourite Francisco Cordeiro 6-2 in his opening match. 

But he come up short against his Iranian opponent, losing 6-4. 

He said: "I’m incredibly proud of what I’ve achieved; being able to overcome my condition to be here in Rio is something I never considered that I’d be able to do."

Image source, Getty Images

Elizabeth Hudson
BBC Sport's Paralympics reporter in Rio

It might be another hot day in Rio, but the Carioca Arena 3 might be the coolest place in the Paralympic Park and the wheelchair fencers will be happy about that - as am I!

Britain's Piers Gilliver has already secured himself a medal after winning his men's epee A semi-final and he goes in the decider against world champion Sun Gang of China at 21:47 BST.

The pair are the top two in the world rankings and Sun beat Gilliver in last year's World Championship final.

Image source, BBC Sport

Here's some key facts about wheelchair tennis for you. 

Unlike Olympic tennis, the ball can bounce twice before a hit and the second bounce can be outside of the court. 

There are two classes. The quad class is for athletes who have severe lower limb impairments as well as an impairment in their playing arm. In fact, these players often strap their hand to their rackets for stability. 

The open class is for all other physical impairments including athletes that do not use a wheelchair in daily life e.g. amputees. 

Ding ding ding! We have another GB medal!

After a four-and-a-half hour epic, Andy Lapthorne and Jamie Burdekin have prevailed 3-6 6-4 7-6 against Israel's Itai Erenlib and Shraga Weinburg to take bronze in the quad doubles wheelchair tennis.

Lapthorne partnered Peter Norfolk in the event in 2012 and they came away with the silver, while Burdekin won bronze with Norfolk in Beijing. 

• 21:41 - Ellie Simmonds goes head-to-head with fellow Brit Ellie Robinson in the S6 400m freestyle final
• 21:47 - Piers Gilliver in the wheelchair fencing individual epee gold medal match
• 22:14 - USA's Tatyana McFadden aims for the second of six potential golds in the women's T54 1500m final
• 22:22 - David Weir aims for his third consecutive title in the T54 1500m
• 23:21 - Oliver Hynd goes for his second gold of the Games in the men's 100m backstroke S8 final
• 23:28 - Seven-time medallist Steph Millward and Steph Slater go in the women's 100m backstroke S8 final
• 23:42 - Libby Clegg is looking to add to her T11 100m gold in the 200m
• 23:49 - Ryan Crouch and Matthew Whylie compete in the men's S9 50m freestyle final

All times BST

It's a bit tense over in the tennis.

GB's Andy Lapthorne and Jamie Burdekin are battling it out with Itai Erenlib and Shraga Weinburg of Isreal for the bronze medal in the quad doubles wheelchair tennis. 

They've gone into a third-set tie-break...