Yahoo! News: Mexican Sprinter Ana Gabriela Guevara speaks during...

Summary: p Mexican Sprinter Ana Gabriela Guevara speaks during a news conference in Mexico City January 16, 2008. Guevara, one of Mexico9s few athletes to earn a silver Olympic medal, said on Wednesday she was retiring from the tracks, citing a lack of support from local sports authorities. REUTERS/Henry Romero /p

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