Bianca Walkden has won bronze in the over 67kg taekwondo category at the Olympics.
She earlier missed a place in the gold medal fight after her semi-final opponent outscored her in the last second.
The 29-year-old from Liverpool was ahead but ended up losing the bout with seconds to go after taking a head kick from South Korea’s Lee Da-Bin.
Walkden’s win over Polish opponent Aleksandra Kowalczuk secured the second Olympic bronze of her career.
Team GB is enjoying its best start to an Olympic Games in modern history.
Walkden’s medal brings Team GB’s total to 11 – eclipsing the previous record of six by day four.
Earlier, swimmers Tom Dean and Duncan Scott made history after taking gold and silver respectively in the men’s 200m freestyle.
It is the first time two British male swimmers have shared an Olympic podium in more than 110 years, and comes after Dean caught COVID twice in the run-up to the Games.
The 21-year-old was third heading into the last 50 metres, while Scott was sixth at the halfway stage, but the pair finished strongly in a dramatic last stretch that ended with just 0.04 seconds between them.
The bronze went to Brazil’s Fernando Scheffer.
Scott had qualified fastest for the final but it was Dean who held his form to win the second gold in the pool for Team GB – and trigger wild celebrations back home in Maidenhead, Berkshire.
His victory is the fourth gold of this year’s Games for Team GB, after Monday’s gold rush kicked off by Adam Peaty in the breaststroke.
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“I knew it was going to be a dogfight, I didn’t know how people were going to swim it, just race the race and that’s how it is,” Dean said.
He said the Olympics had seemed a “million miles off” when he was isolating in his flat after contracting coronavirus twice in a year.
“I contracted COVID-19 twice in the last 12 months, I had six or seven weeks out during an Olympic year which is almost unheard of,” he said.
“The first time wasn’t too bad. The second time I did the full isolation period, I wasn’t able to train and it was a slow-build back into training.”
Dean’s mother, Jacquie Hughes, told Sky News her son knew he could win.
“I knew he was feeling confident, I knew he had put in the work. He knew it was going to be a tight race; Duncan Scott is an amazing swimmer – and he knew, as he said, it was going to be a dog fight.
“I asked him this morning ‘did you think you could win?’ And he said yes he did.
“He feels like he is in a dream at the moment.”
In winning gold, Dean set a new British record with a time of 1:44:22.
Duncan Scott was narrowly above Dean in the rankings coming into the Games and qualified fastest but was delighted for his teammate.
Meanwhile, Georgia Taylor-Brown won silver for Team GB in the women’s triathlon, despite a flat tyre during the cycling section.
Taylor-Brown, who may have challenged for gold but for the flat tyre, secured silver behind Bermuda’s Flora Duffy took gold to become Bermuda’s first-ever Olympic champion.
The 27-year-old told Sky News: “As a kid I always wanted one of these medals. I just wanted to be an Olympian.
“But then you think ‘that’s a dream I had as a 10-year-old. I’m 27, is it ever going to become a reality?’ And yeah this morning it did.”
There was heartbreak for Britain’s Kimberley Woods in the women’s kayak single event.
She made it to the final after qualifying second in her heat but didn’t manage to win a medal after making an error early on in one of her runs.
Elsewhere, US gymnast Simon Biles pulled out of the women’s team final due to a “medical issue”.
And there was an upset in the tennis.
Japan’s Naomi Osaka – also one of the stars of the Games – beaten by Marketa Vondrousova of the Czech Republic 6-1, 6-4 in the third round.
Osaka, who lit the Olympic cauldron in Friday’s opening ceremony, had won her opening two matches in straight sets.