Cloud nine as majestic Bolt bows out

Usain Bolt put the seal on a glittering Olympic career with a blistering 4x100m relay victory that clinched sprint's first ever 'triple triple'. With his unprecedented third straight 100m, 200m and 4x100m clean sweep, Bolt joins Carl Lewis and Paavo Nurmi on a record-equalling nine track and field Olympic gold medals. Bolt had said winning three more golds in Rio would make him "immortal" and it is likely that athletics will miss its greatest showman, who is set to retire next year.