Joe Choong failed to become Britain's first Olympic medallist in the men's modern pentathlon after a poor final round.
Australia's Chloe Esposito wins Olympic gold as Britain fail to win a modern pentathlon medal for the first time since 2000.
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Russia's Aleksander Lesun streaks clear to win modern pentathlon gold, with Ukraine's Pavlo Tymoshchenko claiming silver and Ismael Hernandez Uscango of Mexico taking bronze.