World number one Jannik Sinner continued his march towards the US Open title last night, beating Lorenzo Musetti in straight sets.
The Italian took just two hours to book his place in the last-four, while Novak Djokovic also advanced thanks to his win over Taylor Fritz.
In the women's draw, two-time champion Naomi Osaka beat the Czech 11th seed Karolina Muchova to secure her spot in the semi-finals.
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Osaka will face Amanda Anisimova in the last four.
