McPherson runs personal best 51.39 to win in Birmingham
It was only her second race of the season indoors after opening her season on February 11 with a 52.82 clocking at the Tyson Invitational in Fayetville.
McPherson, 400m bronze medallist at the 2013 Moscow World Championships, finished ahead of Lieke Klaver of the Netherlands who ran 51.49 and Poland’s Justyna Swiety-Ersetic who ran 52.09.
Two other Jamaicans, Roniesha McGregor and Janieve Russell, finished fourth and sixth in 52.32 and 52.53, respectively.