London: Tyson Gay will look to follow up his victory over world and Olympic champion Usain Bolt in Stockholm last week when he goes head to head with Asafa Powell in the 100 metres at the London Grand Prix.
American sprinter Gay handed Bolt only his second professional 100m defeat when easily beating the Jamaican in last Friday`s Diamond League meet in the Swedish capital, clocking 9.84 seconds.
Bolt on Tuesday announced he would not be competing for the rest of 2010 because of a back injury, leaving sprint rivals Gay and Powell to battle it out in the three remaining Diamond League meetings.
Powell, who like compatriot Bolt has run a world-best time of 9.82 secs this year, was absent in Stockholm owing to back trouble and admits he is not at peak fitness.
"I have had a lot of problems with my groin and that spread to my back and hamstrings," Powell said. "Since Paris (July 16), I have been unable to train at 100 percent. I have been getting treatment twice a day every day and slowly I am getting better.”
"My coach (Stephen Francis) and manager (Paul Doyle) have all my races lined up but I am not even aware of what is next," added Powell. "All I am doing is focusing on getting healthy and back able to race. I am taking it day by day."
Gay, a three-time world champion, has beaten Powell over 100m on English soil already this season - at the Diamond League event in Gateshead last month - and will be the favourite at Crystal Palace after his recent exploits against Bolt.
Trinidad`s Richard Thompson and American pair Walter Dix and Wallace Spearmon are also down to compete in the sprint.
There will be many other intriguing battles in the two-day meet, where the crowd will welcome back a host of athletes who helped Britain return a record 19-medal haul at the European Championships in Barcelona.
Home favourite Mo Farah, the new European 5,000m and 10,000m champion, will take on Kenyan-born American Bernard Lagat over 3,000m. Lagat won world indoor gold at that distance earlier this year.