Amanda Anisimova and Jessica Pegula, the victor over Keys, set up all-American quarterfinal in Melbourne.
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Jannik Sinner has secured a place in the quarterfinals at the Australian Open in his campaign to defend his title, hours after women’s defending champion Madison Keys was knocked out by Jessica Pegula.
The Italian beat compatriot Luciano Darderi in three sets on Monday to book a place in the last eight.










