LONDON - Jamaican sprinter Asafa Powell pulled out of Friday's Diamond League meeting at Crystal Palace, saying he doesn't want to risk aggravating a groin injury before the world championships.
In a statement released by organizers, Powell said he had felt tightness in his groin since competing in Budapest on Saturday when he ran the 100 metres in 9.86 seconds.
The Crystal Palace meet is the last Diamond League event before the world championships begin Aug. 27 in Daegu, South Korea.
"I had hoped that it would have cleared by now but it's still there," Powell said. "I've been seeking treatment but had to make the decision today to withdraw.
"I am focusing on Daegu and as much as I'd like to run tonight, I just can't take the risk with the major championships three weeks away."
The 28-year-old Powell has the fastest 100 time in the world this season of 9.78. He is aiming to beat defending champion Usain Bolt at the world championships for his first major individual title. Bolt is not competing in London.
Powell had been scheduled to run the 100 on Friday night. In his absence, fellow Jamaicans Yohan Blake and Nesta Carter lead the field. Blake has run 9.95 seconds this season, and Carter 9.90.