Key dates: Preliminary rounds begin July 29; gold medal match Aug. 10 Venue: Riverbank Arena Big story: Long considered the best female field hockey player in the world, Argentine Luciana Aymar will be taking one last shot at Olympic gold in London. The Argentine squad -- known as the Lionesses in their home country, where they are wildly popular -- comes in ranked No. 2 in the world after being upset by the United States at the Pan Am Games in October. If Argentina is to win gold, the team will have to do it without starting goalie Belen Succi, who is expecting her first child this fall. Top U.S. prospects: Team USA's goalie for the past decade, Amy Swensen, is largely regarded as the world's top female at her position. Katie O'Donnell, the youngest player ever to be capped by the national team, scored in the U.S. upset over Argentina in the Pan Am Games. Others to watch: Several European stars will be looking to spoil Aymar's Olympic farewell, including Maartje Paumen, the star of the No. 1-ranked Dutch team and one of the sport's most feared penalty corner exponents. Germany's Natascha Keller has scored 203 goals in her international career and is set to compete in her fifth Games. Little-known fact: The Duchess of Cambridge, the former Kate Middleton, is a big field hockey fan and was captain of her high school team. She hopes to attend one of their Olympic matches.
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