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Sascha Bajin poses with Naomi Osaka after being awarded the WTA Coach of the Year Award at the 2019 Brisbane International WTA Premier tennis tournament Stock Photo - Alamy
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Naomi Osaka's Ex-Coach, a Part of Serena Williams' Entourage Once, Was Hilariously Accused of 'Cheating' With Venus – 'Hope You Are Not In..' - EssentiallySports
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Naomi Osaka's split with Sascha Bajin a sign of the times and her steeliness | Naomi Osaka | The Guardian
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A Hitting Partner Switches Sides, From Serena Williams's to Victoria Azarenka's - The New York Times
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