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.

World number one Jannik Sinner opened his U.S. Open title defence with a 6-1 6-1 6-2 demolition of unseeded Czech Vit Kopriva on Tuesday, appearing to be fit again after illness derailed his Cincinnati finale.