Chris Boardman
Olympic cycling champion on BBC TV

We will wait to see what the judges say but I think Katy Marchant should be OK there.

Jeanna Skinner: Laura Trott is literally superwoman!

Stacy Phillips: Laura Trott is in tears, I'm in tears, the whole country is in tears!! And more medals to come in the velodrome too!!

Alex: Wow!! Just wow! Laura Trott is amazing - knocked it out the park. British cycling is just immense!

Here's the terrific sprint from GB's Becky James which has put her through to the final with a time of 10.970.

She's up next in her gold race.

Let's not forget GB have more medals to race for tonight and Katy Marchant is in bronze medal action in the sprint.

She looks to have won the first race in a best of three against Elis Ligtlee of the Netherlands.

She may have left the sprinting line, but unless the judges intervene she's 1-0 up.

Trott's GB team-mate Joanna Rowsell Shand on BBC One: "Laura has got a 100% record in the Olympics - she rode twice in London and two here in Rio and she has won all four. That must be a record in itself."

Four-time Olympic gold medallist Laura Trott: "I can’t believe it. I don’t want to cry. I did not expect that at all. I am so happy that it came together and can’t thank everyone at home that you don’t see enough. 

"They really help me and I couldn’t have done it without everyone, especially Paul Manning my coach. He puts up with me on a daily basis and today I am literally over the moon.

"You think of people like Sir Chris Hoy who have come and done it time and again, to repeat my success I can’t explain I am so, so, happy."

Laura Trott wins the points race of the omnium to cement her name in history by being the first British woman to win four gold medals.

Watch her winning moment here.

TWENTY-FOUR YEARS OLD.

FOUR OLYMPIC GOLD MEDALS.

Laura Trott can take over the world if she wants.

Victoria Pendleton
Olympic cycling gold medalist on 5 live

I don't want to speak too soon but you'd like to think...Dame potentially? 

She has won more gold medals than we would have hoped to have achieved in a lifetime and she is still so young, she could have three, four more Olympics in her and it is scary to think what she could achieve beyond this. She is already Britain's most successful female Olympian and she is only 24.

Steve Parry
Olympic bronze medal swimmer on 5 live

The atmosphere here in the velodrome is amazing. So many Union Jacks around here - we could be in London such is the support for Laura. She was so dominant throughout this event and four gold medals - richly deserved.

Image source, .

Tears roll down the face of Laura Trott. Her face is as red as her medal is gold.

She clogs over to her family - not an easy feat in cycling cleats - and embraces them. Emotional stuff from a remarkable athlete.

Victoria Pendleton
Olympic cycling gold medalist

Laura Trott is incredibly tough and tenacious. She might look fragile but it is the complete opposite of what is going on inside. She always pushes herself to the absolute limit.

Chris Boardman
Olympic cycling champion on BBC TV

Laura Trott didn't put a foot wrong in the entire race. She did everything that she needed to do, didn't panic and the battle behind her played right into her hands. 

There was nothing anyone could do. We thought there would be a close fight but we didn't see a trouncing like that coming.

Final lap...

Four laps to go. Silver and bronze to be decided on the final sprint between Hammer and D'Hoore. Forgive me if I get distracted from that momentarily though.

Alistair Magowan
BBC Sport in Rio

Image source, PA

Minutes before Giles Scott stepped onto the podium to receive GB's first sailing gold in Rio, Hannah Mills and Saskia Clark took an unassailable lead in the overall 470 women's race after third place in their 10th race.

Scott won gold before the final medal race, and the British pair, who won silver in London 2012, have now matched that dominance. 

Sarah Hammer and Jolien D'Hoore sprint for one single point that could prove vital in the race for silver.

Hammer gets it and she has a two-point advantage over D'Hoore in silver position.

Like a shadow, Laura Trott follows them, never taking an eye off them.

Chris Boardman
Olympic cycling champion on BBC TV

With so few laps to go Trott can afford to start riding more aggressively. 

We might see her taking part in a breakaway just for the fun of it.

Her rivals would have to do something spectacular now, I think it would be all but impossible.

Image source, Reuters

Just stay upright Laura Trott.

This is like Chris Froome's processional ride into Paris, except there's a roof.

Sixteen laps to go.