Rating is available when the video has been rented.
This feature is not available right now. Please try again later.
Published on Jul 6, 2012
Amantle Montsho reasserts her dominance in the 400m event - after her world leading time earlier in the year was surpassed by Sanya Richards-Ross. An impressive display also from Christine Ohuruogu - in a season's best of 50.59, consistently improving this season - a promising run of form leading into the Olympics in London.