By Amy Tennery NEW YORK (Reuters) -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.

Jannik's biggest rival is Carlos Alcaraz, who has a reported net worth of $40 million, and per Forbes, annual earnings of $48.3 million. Alexander Zverev, the world's number three, has a reported net worth of $14 million, and Taylor Fritz, the world's number four, a reported net worth of $10 million and annual earnings of $15.6 million, per Forbes.

World number one Jannik Sinner drops only four games in a dominant straight-set win over Vit Kopriva in the US Open first round.