London 2012 field hockey: In surprise upset, US takes down No. 2 Argentina

London 2012 field hockey: Britain now medal contender as U.S. lands upset. National Post Wire Services Aug 1, 2012 – 11:17 AM ET | Last Updated: Aug 1, 2012 2:24 PM ET. Daniel Berehulak/Getty Images. Victory: Georgie Twigg (L) of Great BritainLondon 2012 field hockey: Britain now medal contender as U.S. lands upset. National Post Wire Services Aug 1, 2012 – 11:17 AM ET | Last Updated: Aug 1, 2012 2:24 PM ET. Daniel Berehulak/Getty Images. Victory: Georgie Twigg (L) of Great BritainThe U.S. team lines up as the national anthem is played before the women's field hockey game against Germany in London. Toni L. Sandys / The Washington Post. Related Content. Melissa Gonzalez, center, of the United States tries

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