Tennis
When the serve is not within the boundaries, what is it called?
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In 1994, Vince Spadea became the youngest American to do what in tennis?
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In which year did Nicolas Kiefer win the Australian and U.S. Open Junior's tournaments?
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Which women's tennis pro is superstitious about her mother wishing her good luck before each game?
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What did Justine Henin take up after her Olympic win?
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Who protested the inequality of Wimbledon prize money in the 21st century?
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Which tennis pro won the 2017 Hamburg European Open?
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