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The men's tournament of water polo at the 2011 Pan American Games in Guadalajara, Mexico will take place from October 23 to October 29, when the United States defeated Canada 7–3 for the gold medal.
The women's tournament of water polo at the 2011 Pan American Games in Guadalajara, Mexico will take place from October 23 to October 28, when the United States defeated Canada 27–26 in a penalty shootout for the gold medal.