Bolt ready to close Olympic curtain

Usain Bolt has confirmed this year's Olympics will be his last, snuffing out the possibility of extending his career to the 2020 Games in Tokyo.

The Jamaican sprint king had raised the prospect of prolonging his Olympic career in January after revealing his coach, Glen Mills, had suggested his fitness would carry him through to Japan.

But Bolt told AFP subsidiary SID in a weekend interview the curtain will come down on his Olympic career at the upcoming Games in Rio de Janeiro, where he is targeting three more gold medals.