Tyson Gay will race at both of Britain's IAAF Diamond League meetings this summer as he bids to surpass Usain Bolt's world 100 and 200 records.

The American, the 100 and 200 world champion in 2007, will run the 200m at the British Grand Prix in Gateshead on July 10 and the 100m at the London Grand Prix at Crystal Palace on August 13-14.

He said: "With no major worldwide championship this year, the Diamond League will be the biggest thing in track and field. I always enjoy competing in Britain, and I'm happy to see they have two Diamond League events."

The American, whose 100m best is 9.69secs and 200m best 19.58secs, compared to Bolt's times of 9.58 and 19.19, last month became the first man to run a sub-10 100m, sub-20 200m and sub-45 400m when he clocked a personal best 44.89 over one lap in Gainesville.

He added: "I'm really looking forward to returning to Gateshead for the British Grand Prix.

"I've been to Gateshead twice and was able to win both times.

"I'm hoping to make it three in a row when I go back to compete in July. The crowd is always great, really lively and energetic. I look forward to giving them a great show.

"Competing in London is always great. The stadium is always packed and there's a great carnival atmosphere.

"It's fantastic racing in front of the Crystal Palace crowd and I'm really looking forward to being there again in August."

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