OMNISPORT 

Usain Bolt says he will only achieve "immortal" status in athletics if he completes the 'triple-triple' at Rio 2016.

The Jamaican sprint sensation became the first man to win three 100 metre titles as he blew away the competition to win Sunday's final in a time of 9.81 seconds, with great rival Justin Gatlin a relatively distant second.

Bolt will now switch his focus to the 200m and 4x100m relay as he attempts to win three golds for the third successive Games, an achievement he says will define his legendary career.

"Somebody said I can become immortal. Two more medals to go and I can sign off. Immortal," Bolt, who insists this Olympics will be his last, said after his latest triumph.

"It was brilliant. I didn't go so fast but I'm so happy I won. I told you guys I was going to do it."