The immediate consequence is stark: if Carlos Alcaraz wins through his quarter and semi-finals, no American from his half will reach the US Open men's final, and the country’s search for a home champion would continue beyond Andy Roddick's 2003 victory.

The draw places three Americans, Ben Shelton, Frances Tiafoe and Alex Michelsen, in the defending champion's half. Alcaraz, a seven-time major winner, meets eighth seed Ben Shelton in Tuesday's quarter-final. Should Alcaraz advance, his semi-final opponent will be either Tiafoe or Michelsen, meaning one player could single-handedly prevent an American finalist from this section of the draw.

Alcaraz acknowledged the home crowd's role on Arthur Ashe Stadium, saying, "I think he [will] use the crowd, the people behind him, especially when he's playing here at home." That point underscores the edge Shelton hopes to exploit as he pursues a first tour-level victory over the Spaniard; Shelton has not beaten Alcaraz in three meetings and lost in four sets at last year's French Open.

Tiafoe, seeded 11th, remains in search of a maiden Grand Slam final after twice exiting at the semi-final stage in majors. He has drawn energy from recent results, including a run to the Cincinnati final, and described New York as, "It's an out-of-body experience, no question. No real explaining that type of feeling. It's like you're not even touching the ground at one point. Energy is so high, and it seems like the level of play matches that."

Alex Michelsen, 22 and ranked 46, reached his first Grand Slam quarter-final without dropping a set and has largely flown under the radar. He candidly described early-round nerves, saying, "First, second, third rounds, all matches I'm feeling nerves. It's a human experience," and added that managing those nerves has been central to his run.

American interest is not limited to the men's draw: six US players have reached the quarter-finals across both singles draws, the highest combined total since 2002. On the women's side, third seed Jessica Pegula faces Emma Navarro in an all-American match on Tuesday, and Coco Gauff can join them by beating Mirra Andreeva on Wednesday. Navarro quipped after her last-16 win, "I should have talked to the crowd a little, asking them to come back and cheer me on for that match. I'm definitely going to need them."

The next days are decisive. Tuesday's Alcaraz–Shelton quarter-final sets the immediate path: a win for the Spaniard would leave Tiafoe or Michelsen to chase a first shot at the final from this half, and the result will significantly shape whether the United States finally ends a two-decade men's singles drought.