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Bahrain's Salwa Eid Naser stunned race favourite Shaunae Miller-Uibo to take the women's 400 metres world title on Thursday in the third fastest time ever run of 48.14 seconds.
The 21-year-old Nigeria-born sprinter - silver medallist in the 2017 final - was clear coming into the straight and though Miller-Uibo closed she had too much of a gap.
Miller-Uibo took silver with a time of 48.37sec whilst Shericka Jackson of Jamaica was third (49.47).
