BBC Sport - World Championships 2015: Allyson Felix storms to 400m gold

Felix claims blistering 400m gold

Allyson Felix won the 400m gold medal at the World Championships to claim her ninth world title.

American three-time world 200m champion Felix won her first 400m crown in 49.26 seconds, the fastest time this year.

Britain's defending champion Christine Ohuruogu finished eighth and last in 50.63.

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