Jamaican 100m world record holder Usain Bolt will run in both the 100m and 200m at the Beijing Olympics.

It sets up an intriguing showdown with Bolt's compatriot and former 100m world record holder Asafa Powell, along with American world champion Tyson Gay.

Bolt, 21, took the 100m record from Powell when he ran a stunning 9.72 seconds in New York on 31 May.

But Powell, 25, returned from injury to defeat Bolt last month in Stockholm in their final meeting before the Games.

Bolt had always said he wanted to run both sprint races at the Olympics but his coach Glen Mills had been hesitant to allow the world 200m silver medallist to double up with the short sprint in the Chinese capital.

But Mills has now confirmed: "He will run both."

Bolt underlined his Olympic 200m credentials with a stunning victory in at last month's London Grand Prix at Crystal Palace.

Powell clocked 9.94 seconds ahead of Trinidad's Marc Burns to win the 100m at the same meeting.

Afterwards, Bolt said: "Looking to Beijing, I think I have a good chance in the 200m and 100m - I'd love to do both but it's up to my coach."