Russian Karen Khachanov has beaten American Sebastian Korda in their Australian Open men's singles quarter final in Melbourne.
Khachanov was 2 sets to love up when Korda retired due to injury.
Later this morning, third seed Stefanos Tsitsipas meets Jiri Lehecka.
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In the women's singles, Wimbledon champion Elena Rybakina is into the semi finals after a straight sets defeat of Jelena Ostapenko.
