Dhaka, July 13 -- Noah Lyles fired a warning shot at contenders over the 200m at the world championships by scorching to victory in the Diamond League meet in Monaco on Friday as Julien Alfred notched up another win in the 100m.

Lyles delivered a near-faultless run to clock 19.88 seconds to edge Olympic champion Letsile Tebogo into second with 19.97sec.

And Alfred timed a very comfortable looking 10.79sec to win the women's event-ending blue riband race ahead of American Jacious Sears (11.02).

But Lyles was the star of the show at a packed Stade Louis II in perfect balmy conditions. Tebogo had even said that when the American's face appears on meet posters, people want to come and see him perform.

And so it proved, Lyles coasting to a...