From left Meseret Defar of Ethiopia, and Allyson Felix of the U.S., and Veronica Campbell-Brown of Jamaica and Vivian Cheruiyot of Kenya pose during his press conference on Thursday, May 10, 2012 in ... more 
From left Meseret Defar of Ethiopia, and Allyson Felix of the U.S., and Veronica Campbell-Brown of Jamaica and Vivian Cheruiyot of Kenya pose during his press conference on Thursday, May 10, 2012 in Doha, prior to the upcoming IAAF Diamond League athletics meeting. With the London Olympics less than three months away, the season-opening Diamond League meet on Friday offers a chance for many of the world's elite athletes to chart their progress and renew old rivalries.(AP Photo/Osama Faisal) less 
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Associated Press | Photo By Osama Faisal
Fri, May 11, 2012 2:24 PM EDT