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Ksenia Efremova: 12-year-old Russian tennis prodigy has 'incredible potential,' says Patrick Mouratoglou | CNN
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22-Year-Old American Tennis Prodigy Rocks 'Queen' Serena Williams' Merchandise After a Blockbuster Run at WTA Event - EssentiallySports
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Ksenia Efremova: 12-year-old Russian tennis prodigy has 'incredible potential,' says Patrick Mouratoglou | CNN
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