Six more gold medals are decided on the penultimate day of the World Championships in Russia, with Fran Halsall the leading British prospect. She finished fourth in the 50m butterfly at the last World Championships two years ago but won the Commonwealth title in Glasgow last summer.
American Missy Franklin became the first female swimmer to win six gold medals at a single World Championships in 2013 and the 200m backstroke world record holder will be expected to retain her title in that event, while Chad Le Clos of South Africa defends his 100m butterfly crown and there's a championship debut for the mixed gender 4x100m freestyle relay.
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