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Jamaica's Tia Clayton edged her twin sister Tina Clayton in the women's 100 metres at the Doha Diamond League meet on Friday while Olympic champion Letsile Tebogo nearly threw away a victory near the finish line in the men's 200 metres.
Tia clocked a world-leading 10.92 seconds, 0.1 second faster than her sister Tina who edged Amy Hunt by one hundredth of a second after the Briton ran a personal best to deny Jamaica a podium sweep.
The legendary Shelly-Ann Fraser-Pryce finished in 4th place in 11.05.