Jamaican sprint legend Shelly-Ann Fraser-Pryce secured her ninth world title on Saturday in Doha as Jamaica won the 4x100 metres relay.
The 32-year-old, who won her fourth world 100m title last Sunday, ran a storming second leg to put Jamaica firmly in the driving seat.
Shericka Jackson had a big enough lead to breach the line in 41.44 seconds with Britain's 200m world champion Dina Asher-Smith anchoring her team to the silver (41.85sec).
For Asher-Smith, it completed a superb championshps as she also took silver in the 100m.
Defending champions the United States rounded off an underwhelming championshps for their 100/200m women sprinters, taking bronze in 42.10sec.
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