USA legend Tatyana McFadden is looking for her first of six golds in Rio - she's just got out the blocks in the T54 400m final.

GB's Sammi Kinghorn on Channel 4 after finishing sixth in the T53 100m: "I'm not frustrated. I need to chill out and enjoy the whole experience. My mum and dad had everyone chanting my name. I'm still young, I've got a lot more to give."

Image source, PA

Tanni Grey-Thompson
11-time Paralympic champion on BBC Radio 5 live

It's been a real step up for Sammi Kinghorn. The crowd, the preparation, everything is so different with this quality of race.

What I think she can take away from this is her last 150 metres was really solid. She doesn't have some of the top-end speed and endurance but that will come. She will learn so much from this race

She's hugely ambitious and wants to be the best in the world. At the moment she is taking steps. She is getting better every time she races but today has shown there is a gap for her to get onto the podium.

Image source, Getty Images

Not many competitors get the chance to win a gold medal 16 years after their last one, but that is the situation facing James Crisp tonight.

The 33-year-old has won 12 Paralympic medals at the 2000, 2004 and 2012 Games (he missed 2008 because of a shoulder injury) and has an incredible haul of three golds, six silvers and three bronzes.

Crisp, who contracted polio as a child, won all his golds at Sydney in 2000, including in the men's 200 individual medal SM 9, the event he will be racing in tonight.

Image source, Getty Images

Sammi Kinghorn is out on the track for her T53 400m final and in the blocks.

Bang - they're off!

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Jo Butterfield will be looking to become a word and Paralympic champion when she competes in the F51 club throw final at 21:33 BST.

Butterfield is paralysed from the waist down after contracting a spinal tumour.

She's joined in the final by GB team-mate Kylie Grimes, who has switched from wheelchair rugby to athletics.

Britain's Sammi Kinghorn is in action on the track in a few minutes, competing in the T53 400m final.

Sammi, 20, was paralysed from the waist down when she was crushed by snow and ice falling from a farmhouse roof in Berwickshire six years ago.

This is her Paralympics debut - but she comes in as a world bronze medallist over 200m.

Image source, Getty Images

Image source, Getty Images

We're asking which Paralympians have impressed/inspired you the most...

Sean: Jason Smyth - fifth Paralympic gold medal and fastest Paralympic athlete on the planet.

Modsya: Latif Romly. Three world records before clinching his gold medal. He was just 0.2m away from Malaysia long jump record.

Leace: All of them. Loving watching every minute. AMAZING.

Elizabeth Hudson
BBC Sport's Paralympics reporter in Rio

It's been a scorching hot day in Rio but the sun is slowly setting over the athletics stadium as the start of the evening's action gets closer.

There are two really good medal chances for GB tonight - Jo Butterfield in the F51 club throw and Richard Whitehead in the T42 200m and both are world champions in their respective events.

Four-time London champion David Weir makes his first appearance of Rio 2016 in the heats of the T54 400m along with Richard Chiassaro.

And American Tatyana McFadden goes in the women's T54 400m final as she hopes to win the first of six golds.

Image source, BBC Sport

BBC Radio 5 live

Don't forget, you can listen to the Paralympics on BBC Radio 5 live from 21:25 BST this evening.

Perfect if you're pottering around the house, or even snuggling under the duvet ahead of another hectic week.

You have got to be a very special competitor to win medals at two sports in the same Paralympics.

That is what Kadeena Cox has done after she took a gold medal in the cycling yesterday after an earlier bronze in the athletics.

Now you can relieve Cox's gold-medal winning performance again as well as the best of the action from Saturday's events with this great highlights video.

Some news from elsewhere to bring you... Kenyan powerlifter Gabriel Magu has been reprimanded by the IPC after taking cough medicine that contained a prohibited substance.

Wanjiku failed the test out of competition, in July.

Image source, Getty Images

Great Britain's flagbearer in the opening ceremony Lee Pearson is sitting pretty in the equestrian dressage Ib event.

Pearson is top on 75.280 points, with the individual championship test to come on Wednesday to decide the medals.

Austrian Pepo Puch is second on 74.000 points.

Sometime soon, Great Britain's Jordanne Whiley, along with fellow Brit Lucy Shuker, plays the Chilean pair of Macarena Cabrillana and Francisca Mardones in the quarter-finals of the wheelchair tennis women's doubles.

Whiley, a winner of eight wheelchair doubles Grand Slam titles, is appearing in her third Paralympics but is desperate to improve on the solitary bronze she has picked up.

"I'm aiming for two golds, nothing less," she told BBC's Nikki Fox in a recent Car Share clip.

Watch the clip below for more from Whiley's interview, and also the chance to see her singing along to both Shania Twain and The Corrs.

These are the British competitors that will be in action in the next hour.

After 21:00: Lucy Shuker and Jordanne Whiley (wheelchair tennis, women's doubles quarter-final)

21:30: Samantha Kinghorn (athletics, women's 400m T53 final)

21:33: Joanna Butterfield and Kylie Grimes (athletics, women's club throw F51 final)

21:45: James Crisp (swimming, men's 200m IM SM9 final - pictured)

21:52: Ben Rowlings (athletics, men's 100m T34 heats)

21:53: Claire Cashmore and Amy Marren (swimming, women's 200m IM SM9 final)

22:00: Jamie Burdekin and Andy Lapthorne (wheelchair tennis, quad doubles semi-final)

Remember... you can listen to the (hopefully) medals pour in from 21:25 BST on BBC Radio 5 live.

Image source, Getty Images

Yvvy D: Impressed by Rebecca Redfern - new to paraswimming just two years ago and now through to the final after being first in heats.

Keep tweeting us using #bbcrio2016 and you can appear in this page.

Evie Edwards, Stephen McGuire and Kieran Steer have lost their boccia BC4 mixed semi-final to host Brazil, going down 4-2.

There's still the chance of a bronze medal for GB though when they face Thailand at 15:00 BST on Monday.

Chris Slegg
BBC London sports journalist

Image source, BBC Sport

Good luck to schoolteacher Sue Gilroy against Nadia Matic in tomorrow's table tennis singles bronze medal match. Will her painted Union Flag nails prove lucky? The kids at Shawlands Primary School in Barnsley will be wishing her well.