John Isner says Jannik Sinner has "all the tools to do amazing things in this game."
Rising young Americans Jenson Brooksby, Mackenzie McDonald and Brandon Nakashima will play the US Open.
Former world No. 9 Coco Vandeweghe also awarded a wild card into US Open, which starts on August 30th.
"So far it hasn't been mandatory to compete, so I haven't done it, no," Tsitsipas said of taking a COVID-19 vaccine.
US Open champion breaks down after a question about balancing media platform and sponsorship promotion.
"The more people talk about you, the more you kind of feel good about yourself that people care to watch you," says Coco Gauff.
Washington, DC finalist Mackenzie McDonald will play for his first US Open main-draw win.
