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Gay set for Moscow double after 200m win

Tyson Gay competes in the opening round of the men's 200 meters on day three of the 2013 USA Outdoor Track and Field Championships at Drake Stadium on June 22, 2013 in Des Moines, Iowa. Gay flew to the year's fastest 200m of 19.74 seconds at the US athletTyson Gay flew to the year's fastest 200m of 19.74 seconds at the US athletics championships on Sunday to set himself up for a World Championship sprint double challenge.