Defending champion Sabalenka reaches US Open quarter-finals

World number one Aryna Sabalenka led the way into the US Open quarter-finals, subduing American Taylor Townsend in straight sets on Sunday to keep her bid for a rare three-peat on track.Sabalenka rallied from 3-1 down in the second set for a 6-4, 6-3 victory on Arthur Ashe Stadium, where men's defen

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