US track star Sydney McLaughlin-Levrone ran the second fastest time ever to win a stunning gold in the women's 400 metres at the world championships on Thursday.

The 26-year-old American clocked 47.78sec on a rain-slicked Tokyo track to smash the previous championship record of 47.99sec set by Jarmila Kratochvilova of then-Czechoslovakia in 1983.

Originally published on doc.afp.com, part of the BLOX Digital Content Exchange.