Jannik Sinner launches U.S. Open title defense with easy win
Defending champion and No. 1 seed Jannik Sinner cruised through his first-round match at the U.S. Open, taking down Vit Kopriva of the Czech RepublicDefending champion and No. 1 seed Jannik Sinner cruised through his first-round match at the U.S. Open, taking down Vit Kopriva of the Czech Republic