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1Jade Jones
Getty Images Country: GB
Sport: Taekwondo
Jones is already a double Olympian having won gold at both London (where she became Britain's first ever athlete to win gold for the sport) and Rio. With Tokyo, she's attempting to make history by securing a third gold medal, which has never been done before by a takewondo athlete.
2Allyson Felix
Getty Images Country: USA
Sport: 4oom sprint and 4x400m relay.
The five-time Olympian first won an Olympic medal in 2004 (silver), won gold in London in 2012 and so far holds nine medals in total from sprints and relays.
If Felix gets any two medals at the Tokyo games, she will become the most decorated US athlete - male or female - in track and field history.
It's also Felix's first Olympics since she became a mother, to daughter Camryn, in 2018.
3Letesenbet Gidey
JOSE JORDAN//Getty Images Country: Ethiopia
Sport: 5,000m and 10,000m
Earlier this year, Gidey broke the world record for the 10,000m two days after it had been set by fellow competitor Sifan Hassan. She is also the first woman to have held both world records for 5,000m and 10,000m since the early 1990s, according to the Guardian.
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4Helen Glover
Getty Images Country: GB
Sport: Rowing
Having won the womens coxless pair rowing Olympics event in both 2012 and 2016, Glover retired and had three children, a boy and then twins (a boy and girl). However, when the Olympics were postponed due to Coronavirus, she resumed training, came out of retirement and later qualified for the Olympics at 35.
5Dina Asher-Smith
Getty Images Country: GB
Sport: 100m and 200m sprints and 4x100m relay
One of the closest races to watch this competition will be when Asher-Smith takes to the track against sprint heavyweights like Shelly-Ann Fraser-Price.
Since 2016 - when Asher-Smith won a bronze medal with the women's relay team - she has become the fastest woman in British history, setting national records in the 100m and 200m. At the 2019 World Championships in Doha, Asher-Smith took gold in the 200m and silver in the 100m.
6Naomi Osaka
Getty Images Country: Japan
Sport: Tennis
Raised in the US to a Japanese mother (she was also born in Japan) and a Haitian father, Osaka is representing her birth country in this year's games and is one of the faces of the Olympics too.
Currently ranked world number two (behind Australian Ashleigh Barty) this will be Osaka's first Olympics, but it's worth noting that she currently has four grand slam titles to her name, beating off tennis greats like Serena Williams in the process.
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7Katerina Johnson-Thompson
Getty Images Country: GB
Sport: Heptathlon
This will be the third Olympics for Liverpool-born Team GB athlete Johnson-Thompson, aka KJT. Two years ago, in Doha, the athlete won gold for the heptathlon and surpassed the previous record previously held by London 2012 gold medallist Jessica Ennis.
8Ramla Ali
Getty Images Country: Somalia
Sport: Boxing
Somali-born, London-raised Ali is competing for her country of Somalia at Tokyo and carried the flag at the opening ceremony. Ali had to set up a boxing federation for the east African country to ensure she could compete for them.
9Laura Kenny
Getty Images Country: GB
Sport: Cycling
Already Team GB's most decorated female Olympian (and married to the most decorated male, Jason Kenny, who ties with Sir Chris Hoy for that honour), Kenny is hoping to increase her medal count in Tokyo.
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10Alice Dearing
Clive Rose//Getty Images Country: GB
Sport: Swimming
The 10km open water swimmer has already made history upon qualifying for the Olympic games, becoming the first Black swimmer to represent Team GB at the Olympics. A former world junior champion, the 24-year-old is also the founder of the UK's Black Swimming Association.
11Seonaid McIntosh
Getty Images Country: GB
Sport: Shooting
All eyes will be on McIntosh this weekend as she competes in one of the first Olympic events of shooting. As the Guardian points out, she's already GB's best female shooter ever and will be going for gold in Tokyo.
12Rikako Ikee
CHARLY TRIBALLEAU//Getty Images Country: Japan
Sport: Swimming
The athlete was on her path to the 2020 Olympics when she found out the devastating news that she had been diagnosed with Leukaemia in 2018. Three years later, and after long periods of hospitalisations, she is representing her country, in the city she was raised, having returned to the pool in 2020.
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13Laurel Hubbard
Getty Images Country: New Zealand
Sport: Weightlifting
Hubbard is another athlete making history, as she becomes the first trans athlete to be selected for the Olympics following a decision from the International Olympic Committee (IOC).
14Simone Biles
Getty Images Country: USA
Sport: Gymnastics
Biles rose to fame after competing in Rio in 2016 with her four gold medals won at the tournament. Now, she's hoping to make history by competing in five events where, if she wins them all, she will become the first American woman to win five gold medals at a Games. She would also be the first woman to earn back-to-back wins since the 1960s, according to USA Today.
15Sky Brown
Sean M. Haffey//Getty Images Country: GB
Sport: Skateboarding
Team GB's youngest athlete at the 2020 games is 13-year-old Brown, who will take part in the first ever skateboarding event at the Olympics. The star is currently ranked third in the world for the sport and won bronze at the World Championships in 2019.
Olivia Blair is Talent Editor at Hearst UK, working predominantly across Cosmopolitan, ELLE, Esquire and Harper's Bazaar. Olivia covers all things entertainment and has interviewed the likes of Margot Robbie, Emma Stone, Timothée Chalamet and Cynthia Erivo over the years.
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