Australia Who are the youngest and oldest athletes at Tokyo, and who has been to the most Olympics?
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The Tokyo Olympics and its athletes are already setting records a day into the competition.
The Games are already the most expensive, costing $US15.8 billion ($21.4 billion).
But with that price tag, which was bumped by the one-year delay because of the pandemic, comes a record-breaking 33 sports and 339 events.
There are also more women competing in the Olympics than ever and they make up 49 per cent of all competitors — the highest ratio ever.
Let's take a look at some of the records the competitors are setting before they even step up at Tokyo.
Who is the oldest Olympian?
Australian Mary Hanna, 66, is the oldest athlete to compete at the Tokyo Olympic Games.
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This is Hanna's seventh Olympics, competing in dressage.
She has represented Australia at five previous Games, starting in Atlanta in 1996.
Hanna spends her down season in Australia to be close to her grand kids.
The oldest Olympian ever was Sweden's Oscar Swahn, who was 72 when he competed in shooting at the 1920 Olympics in Belgium.
Who is the youngest Olympian?
Syria's Hend Zaza is the youngest competitor of the Tokyo Olympic Games at just 12 years old.
The table tennis prodigy is the youngest Olympian since 11-year-old figure skater Beatrice Hustiu competed at the 1968 Winter Olympics.
The youngest Olympian ever was 10-year-old gymnast Dimitrios Loundras, who won bronze in a team event at the birth of the modern Olympics in Athens in 1896.
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Who is the youngest Australian at Tokyo?
The youngest Australian at the Games is 17-year-old swimmer Mollie O’Callaghan.
O'Callaghan started swimming when she was four years old, and Tokyo is her Olympic debut.
Who has been to the most Olympic Games?
Nino Salukvadze, 52, from Georgia will have been to the most Olympic Games out of all the athletes at Tokyo.
A gold, silver and bronze medal-winning shooter, Salukvadze has competed in eight Olympic Games — this will be her ninth.
Salukvadze has competed in every Olympics since Seoul in 1988.
She and her son Tsotne Machavariani were the first mother and son to compete at the same Olympics when they represented Georgia in the pistol events at Rio in 2016.
The athlete who has been to the most Olympics is Canadian equestrian Ian Millar with an unmatched 10 games between 1972 and 2012.
Which Australian has been to the most Olympics?
Equestrian stalwart Andrew Hoy, 62, from New South Wales has been to the most Olympic Games of any Australian.
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Tokyo issince he competed in Los Angeles in 1984.
Hoy will ride Vassily de Lassos at Tokyo and is seeking to add to his Olympic medal collection of three golds and one silver.
While he will represent Australia at the Games, Hoy has lived in England since the 1990s.
Who has won the most Olympic medals?
Germany's "dressage queen" Isabell Werth, 52, is the most decorated Olympian to attend the Tokyo Games.
Werth has won six gold and four silver medals and holds the most Olympic medals for an equestrian athlete.
She will be riding Bella Rose 2 at Tokyo.
The Olympian with the most medals in history is US swimmer Michael Phelps with a total of 28, of which 23 are gold.
Which Australian has won the most Olympic medals?
Swimmers Cate Campbell and Emily Seebohm are tied as the most decorated Australian Olympians at Tokyo, each having won five medals.
Campbell has won two gold, one silver and two bronze, while Seebohm has won two gold and three silver.
Equestrian Andrew Hoy is the Australian at Tokyo to have won the most gold medals, with three. Hoy also has one silver to his name.
The Australian who has won the most Olympic medals in history is swimmer Ian Thorpe with five gold, three silver and one bronze.
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