Rio Olympics 2016: Australia smash women's 4x100m freestyle relay world record
|Olympic Games on the BBC|
|Hosts: Rio de Janeiro Dates: 5-21 August Rio time: BST -4|
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Australia won a second Olympic swimming gold medal on the opening day of Rio 2016 by setting a world record in the women's 4x100m freestyle relay.
The Australian quartet of Emma McKeon, Brittany Elmslie, Bronte Campbell and Cate Campbell won in a time of three minutes 30.65 seconds.
The United States won silver, with Canada taking bronze.
Earlier, Mack Horton won Australia's first gold medal of these Games in the men's 400m freestyle.
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