Reigning champion Jannik Sinner got his US Open defense off to a perfect start on Tuesday afternoon with a comprehensive straight-sets victory over Vit Kopriva at Arthur Ashe Stadium in an efficient performance that saw him drop just four games.

Sinner needed just one hour and 38 minutes to dispose of Kopriva in a ruthless 6-1, 6-1, 6-2 defeat that laid down a marker for the rest of the men’s single draw.

Sinner, who retired due to illness during last week’s Cincinnati Open final against Carlos Alcaraz, showed no signs of any lingering ailment on Tuesday, winning the opening five games of the first set to quickly pull away from his Czech opponent.

Kopriva, who reached the second round of a grand slam for the first time in his career when he defeated Thiago Monteiro at Roland Garros earl

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