Melissa Jefferson-Wooden became only the second woman to win a world sprint treble after leading the United States to 4x100 metres relay gold on Sunday, with Jamaica's Shelly-Ann Fraser-Pryce taking silver in her final race.

Jefferson-Wooden matched Fraser-Pryce's achievement from the 2013 world championships in Moscow by adding to the 100m and 200m titles that she bagged in Tokyo.

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