The Jamaican, whose 100M duel with Tyson Gay was to be one of the highlights of the Crystal Palace event, is suffering with the same injury that forced him out of the Stockholm meeting last week.
"I am disappointed that I will not be able to run at the London Grand Prix as I love running in front of the Jamaican fans here," Powell said in a statement.
Published 12 August 2010, 17:14 IST