Tale of the tape for Titmus' swim race of the century

THE WOMEN'S 400m FREESTYLE TALE OF THE TAPE:

* ARIARNE TITMUS (AUSTRALIA)

Age: 23. Born: Tasmania.

Olympic medals: Two gold, one silver, one bronze

World championship medals: Four gold, two silver, three bronze

Current world records: 200m freestyle, 400m freestyle

* KATIE LEDECKY (USA)

Age: 27. Born: Washington

Olympic medals: Seven gold, three silver

World championship medals: 21 gold, five silver

Current world records: 800m freestyle

* SUMMER McINTOSH (CANADA)

Age: 17. Born: Toronto

Olympic medals: Nil

World championship medals: Four gold, one silver, three bronze

Current world records: 400m individual medley