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Olympics Day 10 - Athletics

LONDON, ENGLAND - AUGUST 06: Brigitte Foster-Hylton of Jamaica reacts after competing in the Women's 100m Hurdles heat on Day 10 of the London 2012 Olympic Games at the Olympic Stadium on August 6, 2012 in London, England. (Photo by Stu Forster/Getty Images)

Best bitter faces of the Olympics

Many Olympians let their facial expressions get the best of them after losing to their talented competitors. Here are some of the best bitter faces of the 2012 London Games. -- By Lauren Jones, Yahoo! Sports