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U.S. forward Abby Wambach, left, chases the ball after Canada goalkeeper Karina LeBlanc, right, knocked it out of the goal mouth during the first half of an international friendly soccer match in Portland, Ore., Thursday, Sept. 22, 2011. Defending in the middle is Canada's Lexi Marton. (AP Photo/Don Ryan)

U.S. soccer star Abby Wambach

Abby Wambach and the U.S. women's soccer team are aiming for a third straight gold medal at the London Olympics.