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Titmus first Australian since Dawn Fraser in 1964 to win back-to-back gold medals in the same event
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Swimming great steps away as the current 200m freestyle world record-holder
Four-time Olympic gold medallist Ariarne Titmus has announced her shock retirement from swimming, saying the seed was sewn by her cancer scare before the Paris Games.
The 25-year-old, who grew up in Tasmania, will retire as one of the greatest distance swimmers of all time.