Elizabeth Hudson
BBC Sport's Paralympics reporter in Rio

Rachel Morris worked her way brilliantly through the field in that race.

She was fourth at the halfway mark and a medal seemed beyond her but she dug in superbly to overhaul her rivals over the second 500m and win a gold medal in a second Paralympic sport after her cycling triumph in 2008.

Elizabeth Hudson
BBC Sport's Paralympics reporter in Rio

Lauren Rowles will be going for gold in the mixed trunk and arm double sculls with Laurence Whiteley, aged only 18 and just over a year after taking up the sport.

The sporty teenager got transverse myelitis in early 2012 which left her paralysed overnight. Later that year, her and mum Natalie went to the London Paralympics and she decided then that she wanted to be in Rio.

After trying wheelchair racing, she started rowing last year and her and Whiteley won world championship silver in their first major event together. It has been a busy few months for the teenager who has combined training for Rio with studying for A Levels.

"Her and Laurence have the same drive and determination," said Natalie. "They are a great partnership and it's all about the race and working hard  - I'm so proud of her - but I'm still really nervous!"

Image source, Getty Images

Image source, Getty Images

Nick Hope
BBC Sport's Paralympics reporter in Rio

Gold would be "icing on the cake" for Lauren Steadman

Following the men's races on Saturday it's the turn of the world's best women Para-triathletes to debut the sport at a Paralympics and in terms of GB prospects there are none bigger than Lauren Steadman.

She's a two-time Paralympic swimmer, who has taken her new sport by storm and went undefeated for over two and a half years after switching in 2013.

"The pressure is there, but I'm a stronger, more experienced athlete now," she tells me.

"If you look at my Paralympic career, I made Beijing but didn't make the finals, then I made finals in London, so to get on the podium this time and bring home the gold would feel like a complete circle."

Image source, PA

So Rachel Morris is going for rowing gold in the single sculls today, but did you know she also won gold for Britain in handcycling in Beijing in 2008 and bronze at London 2012 and gained World Championship silver in her new sport in 2015?

Read more about GB's rowing hopes here.

Elizabeth Hudson
BBC Sport's Paralympics reporter in Rio

Friends and family of the GB team are out in force here at the Lagoa to cheer them on, among them are Lauren Rowles's mum Natalie and grandparents Anita and Peter, Laurence Whiteley's parents Allison and Andy, sister Louiza and her partner Tom.

I also bumped into cox Oliver James's parents Christine and Les, sister Anna and her partner Matt and his girlfriend Millie.

They have t-shirts and posters and loud voices and will be making their presence felt as their nearest and dearest make their way down the 1000m course.

Image source, BBC Sport

GB are also harbouring gold medal hopes in the para-triathlon today, with Clare Cunningham, Lauren Steadman and Faye McClelland all in action in the PT4 race from around 14:00 BST, before before Alison Patrick and guide Hazel Smith go in the PT5.

The women's competitors will be hoping to build on the men's success yesterday, when Andy Lewis took PT2 gold.

"It brings tears to my eyes that I'll be able to tell my kids that I won this gold medal," said Lewis. "Perhaps I'll have my first beer in two years now."  

Want to find out more about para-triathlon at the Paralympics? Then have a look here.

Elizabeth Hudson
BBC Sport's Paralympics reporter in Rio

It's an overcast but humid day at the Lagoa where Great Britain are bidding for four golds today.

This is the third Games where rowing has been part of the Paralympic programme and GB have won golds at the previous two so no pressure today!

The finals start at 13:50 BST.

Image source, BBC Sport

Britain's Rachel Morris and Tom Aggar begin GB's medal hopes on Sunday in their single sculls finals.

Both compete in races for rowers who use their arms and shoulders only.

Get to know more about them in this video.

Image source, Getty Images

So, what should we look out for on day four?

Well, there's plenty to tell you, but  if you're still with us tonight then reigning champion Richard Whitehead will be looking for a medal in the men's 200m T42 final, having broken the Paralympics record in his heat on Saturday. As will David Henson.

Six-time Paralympic gold medallist David Weir will feature in the men’s 400m T54 heats, while ParalympicsGB flagbearer and equestrian rider Lee Pearson, who has 10 Paralympic medals of his own, begins his Rio campaign.

There's loads to come before those guys get under way though, with GB rowing hopes first on the line in Rio...

Image source, Getty Images

Well then, here we go for Paralympics day four. Will it be a Super Sunday for GB? Let's hope so - there are certainly plenty of British competitors hoping they can add to the team's 15 golds so far.

It was a productive evening on Saturday, with Kadeena Cox becoming the first Briton since 1988 to win a medal in two sports at the same Paralympics as she took cycling gold in Brazil.

Earlier, Andy Lewis won GB's first gold of the day with victory in the PT2 Para-triathlon.  

Sabrina Fortune claimed women's F20 shot put bronze, while swimmer Alice Tai took bronze in the women's S10 100m backstroke. Meanwhile, Toby Gold won silver and compatriot Andy Small bronze in the men's T33 100m.

Catch up on all the action as Britain secured eight medals on the third day here.