New Delhi, July 30 -- WASHINGTON - The moment Alex de Minaur walked off the court after beating Stefanos Tsitsipas, the conversation moved somewhere he had not chosen to go. Not to serve percentages or break-point conversion or what a victory over a player of Tsitsipas's calibre does for his ranking. To the next name in the draw. To Cruz Hewitt.

"It's a weird situation," de Minaur said. He did not add much. He did not need to.

Cruz is the son of Lleyton Hewitt, two-time Grand Slam champion, former world No. 1, and Australia's Davis Cup captain since 2016. That role has made Lleyton not just de Minaur's team captain but something closer to a guide, a sounding board, a presence through the particular pressures of representing Australia at...