World Athletics 2011: Ennis bounces back on action-packed night

Great Britain's Jessica Ennis bounces back from a sub-par start to take the lead in the heptathlon on the third evening at the World Championships in Daegu, South Korea.

Blade Runner Oscar Pistorius finds the going too tough in the 400m semi-finals, before Amantle Montsho wins Botswana's first world medal over the same distance by beating American Allyson Felix.

But Carmelita Jeter restores pride for the US by dominating the women's 100m.