Zverev, Five Setters and a Night at Flushing Meadows With No Umpire

Around 3:30 a.m. local time in New York, Alexander Zverev was still awake. He was not awake for his own semifinal, but because he was watching Ben Shelton and Carlos Alcaraz trade blows over five sets on Arthur Ashe Stadium. When it ended, the scoreboard read 6-7(5), 6-1, 6-3, 1-6, 7-6(10-7). Shelton won. Alcaraz, a two-time US Open champion, left the tournament. And Zverev, the top seed, the 29-year-old German, the only former major champion left in the draw, only went to bed as dawn approached.

It is a small detail that ATP Tour's official channel framed as a human-interest slice. My job is to read it the way I read a line in a match report, where one misplaced number can tilt an entire end-of-season document.

Zverev reached the US Open semifinal as the top seed. He sits at No. 2 in the PIF ATP Rankings, and this season he finally broke his own ceiling by winning his first Grand Slam title at Roland Garros. This is his third career US Open semifinal. The draw around him has thinned to the point where he is the only former major champion left standing. His semifinal opponent is Karen Khachanov, a heavy, flat-hitting baseliner who lives on attritional rallies.

But there is one detail in the record I cannot ignore: Zverev needed five sets in each of his opening two matches.

A player with an elite serve, tall, built around the serve-plus-first-strike pattern, should close early rounds quickly. Five sets in the first and second rounds is not a sign of dominance. It is the sign of a winning machine that has not yet learned how to shut a match down. Zverev wins, but he wins by spending himself.

The real story is the physical price he pays for every win, not the number of wins.

For a tall player, the cost of five-set matches falls mainly on movement and return games, the weakest part of this archetype, not on the serve. The serve stays live longest. But in a semifinal against an attritional Khachanov, movement is the deciding part.

I have tracked this problem across many seasons. Years ago, as a data-analysis assistant for an amateur football club in Manchester, I found that the errors in official records rarely sit in the controversial moments. They sit in the numbers nobody bothers to check. Distance covered, break points saved, service games stretched long, that is where the real story lives, while the crowd only sees the ending.

When data contradicts the eye, trust the data, but never forget to check where it came from.

For Zverev, the structural data says one thing clearly: this run is making his body pay a debt. Two five-setters in the opening rounds, a night awake until 3:30 a.m., then an attritional opponent. Three variables compounding, not three separate events.

For years, Zverev was boxed into a label: a talented player who could not win the big matches. Three US Open semifinals without a final is suspicious data. It does not say he is not good enough. It says some mechanism stops him converting outer-round form into inner-round results. This season's Roland Garros title breaks that label, but the old mechanism does not simply vanish.

Something more important sits elsewhere. When Alcaraz left the tournament, Zverev's path to the title widened in theory but tightened psychologically. Before Shelton beat Alcaraz, Zverev was one contender among several. After that night, he became the default contender. The media will call him the last champion standing. And whenever a player earns that label, the weight of expectation presses harder than any opponent.

In the language of discipline work, this is the burden of the favourite. The player expected to win always carries a heavier mental penalty than the player expected to lose. A Zverev semifinal defeat will be called a disappointment. A Shelton semifinal defeat will be called a lesson. The expectation scale is never balanced, and that imbalance is itself an invisible pressure.

A misplaced card can change the flow of an entire season. I once wrote that mistake myself.

The other semifinal is an all-American clash between Shelton and Frances Tiafoe. On merit, it is a compelling match. Structurally, it signals that American men's tennis has a new generation capable of going deep at majors. It also means one half of the draw will produce an American finalist, pushed by a home crowd's wave no European player can match.

And the late-night viewing? I do not think it carries decisive weight. A professional sleeping little for one night rarely collapses because of it. What interests me more is the message Zverev accidentally sent: he said he stayed up because he sleeps until 1 p.m. anyway. That is a relaxed, almost confident line. In elite sport, confidence is sometimes a more reliable indirect fitness indicator than any statistics table.

But I will not be naive enough to read confidence as a guarantee. Because I have written the mistake myself. My first error was not a red card awarded to the wrong man, but believing I would never award it wrongly. As a second-year student, I reported that the referee booked a defender in the 23rd minute of a derby, when the card actually went to a different player. One wrong name, one wrong report. Since then I have understood that excessive certainty is the most dangerous debt a writer can carry.

What I want to stress is how we routinely misread players in transition. A player who wins his first Grand Slam is often described as complete. The opposite is true. Reaching the summit for the first time usually opens a new period of instability, when every opponent wants to beat you and you must learn to live with higher expectations than before.

Most US Open analysis this year will centre on the American story: Shelton and Tiafoe producing an all-American semifinal, a milestone for the country's men's tennis. That is a real story backed by results, and it deserves telling. But it also casts a shadow over the genuinely revealing story: the fragility of Zverev's run.

Fan emotion clashes with the consistency of the rules, and in this case, with the consistency of the data.

A player winning his first Grand Slam at 29 is often framed as an inspiring late bloom. Physically, 29 is also the boundary where movement-dependent qualities begin to decline. Zverev's career is crossing the point between peak experience and the start of physical decline. Every five-set match at this stage is a withdrawal from a reserve he will have to repay later.

And next season the bill arrives. With the Roland Garros title in hand, Zverev carries a large block of ranking points that must be defended. That pressure has not surfaced this week, but it is building in the file. This is why I do not rate short-term readings of US Open wins highly.

The Shelton-Alcaraz match left another lesson. A left-handed, big-serving, flat-hitting player beating an all-court, variety-rich opponent signals that on a fast hard court, raw power and serve dominance can suppress creativity. Two tiebreak sets, with the decider ending 10-7, show this was a battle of serves and brutal clutch moments. Alcaraz lost because he met the right opponent type on the right surface to neutralise his variety.

I would argue the biggest systemic issue at this US Open lies in the night-session structure itself. Marquee matches are pushed into American television's prime window, and the consequence is that players still in the draw go to bed after midnight. A player who cannot sleep enough cannot recover enough, and a player who cannot recover enough produces a lower-quality match. This is an issue tournament organisers should confront directly, rather than framing it as a charming slice of player life.

I record every card, every minute of stoppage time, every small number. Because a wrong number repeated three times becomes truth in the end-of-season report. For Zverev, the number worth recording is not the match result, but the number of sets he needs to travel from the first round to the fourth.

The question I carry away from Flushing Meadows is not whether Zverev wins the title. The question is: if the world No. 2, a fresh Grand Slam champion, drops two opening matches at a major to opponents of a lower tier, what does that say about the gap between the quality of a trophy and the quality of a run?

And if a 29-year-old must stay awake until 3:30 a.m. to watch a potential opponent play, then describe it lightly, perhaps the life of an elite player at the majors has become an ecosystem where competing and watching cannot be separated. Tournaments grow longer. Schedules grow denser. And the concept of rest becomes more luxurious each year.

A tournament is a system. Every decision, every set, every sleepless night is a variable. My job is simply the verification.