NEW YORK -- Jannik Sinner looked fully recovered from a recent illness as he started his US Open title defense Tuesday with a 6-1, 6-1, 6-2 victory over Vit Kopriva .

The top-ranked Sinner had to stop playing in the Cincinnati final against Carlos Alcaraz on Aug. 18 because he was sick, pulled out of the US Open mixed doubles tournament that began the next day and said he still wasn't quite feeling 100 percent late last week.

But he had extra time to recover with first-round matches now spread over three days with the tournament's new Sunday start. He certainly showed no signs of the virus when he rolled through his 28-year-old Czech opponent, who was making his US Open main draw debut, in 1 hour, 39 minutes.

"Obviously very happy that I'm healthy again, that we did our best to be

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