Letsile Tebogo won Botswana's first-ever Olympic gold medal in the men's 200m final on Thursday, as Noah Lyles missed out on a sprint double.

US Track and Field subsequently confirmed 100m victor Lyles raced despite testing positive for COVID-19, yet he still took bronze while compatriot Kenny Bednarek claimed silver.

Tebogo recorded a winning time of 19.46 seconds at the Stade de France, appearing in control from the off as he won just Botswana's third Olympic medal of any kind.

They previously took bronze in the men's 4 x 400 relay at the Tokyo Games three years ago, while Nijel Amos took silver in the men's 800m at London 2012.

Tebogo had already beaten Lyles in the semi-finals, running a time of 19.96 to the American's 20.08.

In Thursday's final, Bednarek followed Tebogo home with a time of 19.62, while Lyles was third with a 19.70 despite rumours circulating about his fitness in the build-up to the race.

After the final, Lyles was wheeled away from the track in a chair and US Track and Field revealed he had been diagnosed with COVID-19.

Another American, Erriyon Knighton, just missed out on the podium with a time of 19.99, while Alexander Ogando of the Dominican Republic was fifth.