By Rebecca BRYAN Agence France-Presse EUGENE, United States (AFP) — US sprint star Sha’Carri Richardson launched her latest bid for a first World Championships berth in style Thursday, clocking a world leading 10.71sec to lead the 100m heats at the US athletics championships in Eugene, Oregon. Richardson delivered a personal best to continue her strong start to a season highlighted by the World Championships in Budapest in August. Richardson clocked a 10.76sec at the Doha […]