Letsile Tebogo won a first ever Olympic gold medal for Botswana when he denied American Noah Lyles a sprint double in the 200m on Thursday and Lyles then admitting he was running after contracting the coronavirus. But there was also triple American joy when Sydney McLaughlin-Levrone won the 400m hurdles in world record time, Grant Holloway got 110m hurdles gold at last, and Tara Davis-Woodhall soared to long jump gold. The other gold went to Pakistan’s Arshad Nadeem in the men’s javelin while Briton Katharina Johnson-Thompson held the overnight heptathlon lead in her bid for the elusive Olympi…