I can run 9.54, says Bolt

 
Bolt clocked 9.69 seconds in last year's Beijing Olympic final despite celebrating his victory before he had crossed the finish line. 

The 22-year-old Jamaican, who will race against compatriot Asafa Powell over 100 metres at the London Grand Prix on Friday, told a news conference his coach Glen Mills had told him he could run the 100 in 9.54.

"If the coach says so, he's always right," Bolt said.

Bolt said he had to do more work on his 200 before challenging Gay at the Berlin World Championships from August 15-23 after losing a month's training following a car accident this year.

He stepped on thorns when he climbed out of the car and needed a minor operation on his left foot.

"Running the curve was really hard for me," he said. "

I couldn't do anything on the curve. I lost a month so my speed and endurance is really low.”