Usain Bolt completes his hat-trick of gold medals at the World Championships . Hide Caption 8 of 11 In the field events , Olympic champion Steven Hooker of Australia added the men 's pole vault title to his Beijing crown by clearing 5.90 meters . It was Jamaica 's seventh gold after the women also claimed sprint relay victory .
Usain Bolt completes his hat-trick of gold medals at the World Championships . Hide Caption 8 of 11 It was Jamaica 's seventh gold after the women also claimed sprint relay victory .