Sanya Richards sets a world leading time at Olso by running 49.23 seconds in the 400m.

Her win marks her second Golden League win after Berlin and in contention for the jackpot prize.

The American is on-form and promises a sub 49s run this season.

Official Site: www.bislettgames.com

1 Sanya Richards [USA] USA 49.23 20
2 Shericka Williams [JAM] JAM 49.98 16
3 Amantle Montsho [BOT] BOT 50.71 14
4 Debbie Dunn [USA] USA 50.84 12
5 Monica Hargrove [USA] USA 50.96 10
6 Christine Ohuruogu [GBR] GBR 51.19 8
7 Yulia Gushchina [RUS] RUS 51.33 6
8 Tamsyn Lewis [AUS] AUS 52.34 4