Bethany Shriever has won a gold medal at the women's BMX racing final - just moments after Kye Whyte landed silver in the men's.
In a historic race for Team GB, the two Olympians claimed the first two medals of any kind for the nation in the sport.
It has been a tough route for Shriever to make it to Tokyo this year after funding was pulled for the women's.
The 22-year-old needed crowdfunding to get to the tournament but she has inspired the country after landing gold against the odds.
"Honestly, I'm in shock. To even be here is an achievement in itself," the Leytonstone-born star said.
"To make a final is another achievement in itself. To win a medal, let alone a gold medal, I'm over the moon.
"It wasn't my goal - results are out of our control. To keep to my routine and keep cool around the track, I managed to hold and earn the win. It is crazy."
UK Sport pulled funding for the sport while Shriever also saved money through a part-time job as a teacher's assistant.
To greet her at the finishing line was Whyte, who lifted her into the air in celebration after the rider legs gave way to cramp.
The 22-year-old had just earned his own medal - silver - in the men's final after finishing 0.114 seconds behind Dutch rider Niek Kimmann.
The pair were making their Olympics debut while Whyte has had to fight back from a nasty injury that threatened to end his BMX career.
"I was watching him as I was going up. I was almost crying because he got a silver. I had to keep my cool and reset and just dig in. I gave it everything I got," said Shriver, who won all three of her semi-final races.
"I had nothing left, the lactic acid was crazy. I gave it absolutely everything I had."
For Kye, the younger of the two BMXing brothers, the postponement of the Games represented an opportunity to prepare himself to launch his medal bid.
The "pride of Peckham', in south London, he started riding at the age of four, and is friends with footballers Reiss Nelson, of Arsenal, and Jadon Sancho, of Manchester United.
Kye got his first taste of racing at the Peckham BMX Club, where his dad was a coach, his mum was the secretary and his older brothers were “the top riders in England.” Even then, it seemed like it was destiny that Whyte would follow in the family footsteps and forge a career as a BMX racer.
“Everything revolved around BMX and I don’t think I could have done anything else, really,” he said before travelling to Tokyo.
“In Peckham, I’m known for doing BMX and it’s just like, ‘he’s the wheely kid or the BMX kid, he’s not part of that. Let’s just leave him out.’
"Living in the area that we do live in, it kept me and my brother on the straight and narrow.”
Meanwhile, Team GB star Dina Asher-Smith started her Olympics campaign in a bid to land a podium finish.
The 25-year-old booked her place in tomorrow’s semi-final for the women’s 100m after coming in second behind Teahna Daniels.
After leading for the opening half of the heat, she was pipped to the finishing line by the American - who beat her by 0.03 seconds.