Bahamian sprinter, Shaunae Miller-Uibo has clocked a world lead time of 49.08 [in 400m] at the USATF Grand Prix on Saturday, April 24 at the renovated Hayward Field arena.

Miller-Uibo, the Olympic 400m champion, relished the setting, too, as she beat runner-up Lynna Irby of the United States by more than a second with 2017 world champion Phyllis Francis back in seventh.

Laura Muir also meant business as she opened her outdoor racing campaign this year with a clear-cut win.

Blasting through the first 300m in 45 seconds, she was already ahead of the pacemaker and the rest of the field and continued to hold a healthy lead to the finish in 4:01.54 as runner-up Helen Schlachtenhaufen finished almost three seconds behind with former world champion Jenny Simpson in ninth.