Photos from the fourth day of the 2012 Olympics in London.
Day 4 of Competition
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Britain's Nicola White and South Korea's Park Seon-mi fight for the ball during their women's Group A hockey match.
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South Korea's Choi Byungchul celebrates defeating China's Ma Jinfei during their men's individual foil quarterfinal fencing competition.
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Jamel Herring of the U.S. leaves the ring after losing to Kazakhstan's Daniyar Yeleussinov in the Men's Light Welter (64kg) Round of 32 boxing match.
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North Korea's Yun Hyon-hui and Yong Sim-choe warm up before their women's football first round Group G match against the U.S.