Australian Open 2019: Karolina Pliskova knocks out Serena Williams in quarterfinals

<strong>Melbourne:</strong> Serena Williams was sensationally knocked out of the Australian Open on Wednesday after losing an epic three-set fight with Czech seventh seed Karolina Pliskova for a semi-final spot. Pliskova won 6-4, 4-6, 7-5 to set up a final four clash with Japanese fourth seed Naomi Osaka, ending the

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