3 / 20

Olympics Day 11 - Athletics

LONDON, ENGLAND - AUGUST 07: Lolo Jones of the United States looks on after competing in the Women's 100m Hurdles Semifinals on Day 11 of the London 2012 Olympic Games at Olympic Stadium on August 7, 2012 in London, England. (Photo by Streeter Lecka/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