US sprinter Tyson Gay (R) powers home beside Jamaica's Asafa Powell (L) during the men's 100m competition at the Daegu pre-championships athletics meeting in Daegu, south of Seoul, on September 25, 2009. Gay won the event clocking a time of 9.94 seconds with Powell taking second place. Getty Images logo Getty Images 2 months ago

US sprinter Tyson Gay (R) powers home beside Jamaica's Asafa Powell (L) during the men's 100m competition at the Daegu pre-championships athletics meeting in Daegu, south of Seoul, on September 25, 2009. Gay won the event clocking a time of 9.94 seconds with Powell taking second place.