Sha'Carri Richardson ran the fastest women's 100m time of the year as she laid down a marker in her bid to qualify for the World Championships.
The 23-year-old American clocked a time of 10.71 seconds in the heats at the US athletics championships in Oregon.
Richardson's time beat the 10.75 ran by Marie-Josee Ta Lou of Ivory Coast at the Oslo Diamond League last month.
She also shaved one-tenth of a second off her personal best, set in 2021 at the Miramar Invitational in Florida.
The 100m semi-finals and final will be held on Friday with the top three US sprinters qualifying for next month's World Championships in Budapest.
Richardson missed the Covid-delayed Tokyo 2020 Olympics after she was given a ban following a positive cannabis test.
