The Belarusian Aryna Sabalenka, who is assured of the number 1 position in the world ranking next week, has reached the quarterfinals of the US Open. On Monday, she defeated Russian Daria Kasatkina in the fourth round. Sabalenka won in straight sets against the number 13 in the world ranking: 6-1 6-3.
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Sabalenka through to US Open quarterfinals
