By Mark Gleeson

CAPE TOWN (Reuters) -In the country famous for its diamonds, sprinter Letsile Tebogo sparkles brightly, having won a first Olympic gold for Botswana in Paris last year and become a powerful role model as he overcame heartbreaking adversity.

His triumph in the men’s 200m final last August propelled him to hero status and emphasised the growing ability of the arid southern African country to produce world-class athletes.

But Tebogo’s success in Paris had an asterisk beside it, fuelling a rivalry that could provide the highlight of this month’s World Championships in Tokyo.

American favourite Noah Lyles had tested positive for COVID before the Olympic 200m and laboured to bronze at the Stade de France, but extracted revenge in last month’s Diamond League final in Zurich, c

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