Jannik Sinner advances at US Open, his first match since doping case ruling announced https://ift.tt/snipSqV Jannik Sinner said it “took some time to get in the rhythm,” but the world No. 1 in men’s tennis advanced to the second round of the US Open with a 2-6, 6-2, 6-1, 6-2 win against American Mackenzie McDonald.

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