His students, including Tracy Austin, Maria Sharapova, Pete Sampras and Lindsay Davenport, developed their ground strokes through his regimen of intense repetition.

Roger Federer, who helped create the team event in 2017, said “the first year was definitely a highlight.” The cup is now in its seventh year.

“It’s amazing I’m going to get to go play just a really fun event that I enjoy with all of my friends,” he said.

The Laver Cup pits Europe against the rest of the world, and players love being picked for one of its teams.

For the first time in more than two decades, an American man and an American woman will play in the U.S. Open singles finals.

Botic van de Zandschulp’s career has had its ups and downs. But a pair of Manhattan financiers he knew as a boy in the Netherlands have become part of his “team.”