(Reuters) -The U.S. Open continues its second round on Thursday, with defending men’s champion Jannik Sinner facing Alexei Popyrin. Women’s second seed Iga Swiatek plays Suzan Lamens, while Coco Gauff takes on Donna Vekic.

TOP MEN’S MATCH: JANNIK SINNER V ALEXEI POPYRIN

World number one Jannik Sinner hardly missed a beat when he started his U.S. Open title defence with a straight-sets win over Vit Kopriva.

His performance, with seven aces and only one double fault, laid to rest much of the speculation about his health, showing he had recovered well after retiring due to illness during the Cincinnati Open final last week.

However, the 24-year-old Italian now faces Australia’s Alexei Popyrin, who is known for testing his opponents with his power and ability to finish at the net. Popyrin

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