Rio de Janeiro: Katie Ledecky swam a sensational anchor leg to claim her third gold medal of the Rio Olympics as the United States won the women's 4x200m freestyle relay on Wednesday.
If Ledecky wins the gold medal in the 800-meter freestyle Friday night, she would become the second woman all-time to win gold in the 200-, 400-, and 800-meter races.
Swimmer Katie Ledecky set a world record en route to winning the gold medal in the 800-meter freestyle.
In the women's 200m backstroke, Hungary's Katinka Hosszu remained on course for her fourth individual gold of the Games after leading the way in two minutes 06.09 seconds, ahead of Canada's Hillary Caldwell.
On Friday night, she also smashed a world record, which has many spectators wondering when Katie Ledecky will swim again at the Rio Olympics.
A little more than 24 hours after winning the 200-meter freestyle, Ledecky anchored the 4x200-meter free relay, helping a team that included Allison Schmitt, Leah Smith and Maya Dirado to a almost two-second win over Australia, finishing in 7:43.03.
Clive Rose Getty Images
"Just kind of the end of a 4-year journey", she said as the tears flowed. Here she is by herself at the finish. This is DiRado's first and last Olympics - she's retiring at the conclusion of the Games, and this was her final race.
"I'm just proud to be part of that history".
With the win and defence of her Olympic title, Ledecky's unbeaten streak moved to a flawless 15 for 15 in individual events at major global meets. Tamsin Cook helped Australia win the silver with a total time of 7 minutes and 44.87 seconds.
Four years ago, Ledecky seemingly came out of nowhere to capture gold as a 15-year-old at the London Games. The memories mean more than the medals to me here. At times, she was more than a body length ahead of world record pace.
'I couldn't do it without my family, ' she said. Maya DiRado, silver medalist in the 400 IM and bronze in the 200 IM, swam the third leg and stuck to the Australians like glue.
Jazz Carlin claimed a second silver medal from Rio 2016 after chasing home the incredible Katie Ledecky in the 800m freestyle.