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Serena Williams unsatisfied with win over Kiki Bertens at U.S. Open, immediately practices serve after victory – New York Daily News
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Serena Williams battles through errors to beat Kiki Bertens at US Open | US Open tennis | The Guardian
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Serena Williams survives second-round test against world No 110 Kiki Bertens to continue bid for calendar Grand Slam at US Open | Daily Mail Online
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Serena survives challenge from Bertens - Official Site of the 2023 US Open Tennis Championships - A USTA Event
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Wimbledon 2018: Venus Williams made to pay for errors in shock defeat to Kiki Bertens-Sports News , Firstpost
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Serena Williams unsatisfied with win over Kiki Bertens at U.S. Open, immediately practices serve after victory – New York Daily News
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Venus Williams outlasts Kiki Bertens to book Miami Open clash vs Johanna Konta | Tennis News - Hindustan Times
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