Asafa Powell, Jamaica's 100m world record holder, is back in training after missing the start of the season with a chest injury and should be fit for the Olympics.

Powell, who set the record of 9.74 seconds in September 2007, pulled a muscle when weight training earlier this year and was forced to rest for two weeks.

"He's doing fine and we expect him to be 100% in two weeks," said his agent Paul Doyle.

"It's just a case of making up time and shouldn't affect his Olympic build-up."

Powell's  first race is expected to be against fellow Jamaican Usain Bolt who ran the second-fastest 100m in history, in a time of 9.76 secs.  That meeting will be at Jamaica's national championships at the end of June.