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Olympic football: USA defeat North Korea to clinch quarter-final spot
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Defending champions USA defeat North Korea 1-0 to clinch a quarter-final spot in the women's football tournament at London 2012.
Abby Wambach scores the only goal of the match which saw North Korea's Choe Mi-Gyong receive a red card for her second bookable offence.
Watch a full replay of the match on BBC Sport's Interactive Video Player.
Available to UK users only.
