Zverev Has Many Chances to Overtake Sinner for the No.1 Ranking

Late September night, I sat in front of an old laptop in a small apartment in Hai Phong, rain drumming evenly on the metal roof. On the screen, footage of my own training session on the My Dinh track looped over and over. In the footage, I warm up, bend down, touch the starting line three times. Three times. Back then I did not understand why I kept hesitating at the moment of the command. Later, writing these lines as a sportswriter, I realised: the biggest fear is not the opponent, it is not knowing whether your own body can still run.

The old laptop taught me: slow does not mean late, it just means telling the story in a different way.

And this week's story in men's tennis is being told in a very different way. Jannik Sinner, who holds the ATP No.1 ranking with 11,500 points, may not hold that position through the end of the season. Alexander Zverev, the 29-year-old German who has just won two Grand Slam titles in three months, has many chances to take the throne. But the real story is not who passes whom. It is the number 2,470 — the defence differential I will explain below.

Context: a season broken mid-stream

To understand why this year's No.1 race is unusual, we need to return briefly to how the ATP ranking system works. The ATP ranking uses a 52-week rolling window. When an event repeats on the calendar, the points a player earned at the same event last year expire, and are replaced by this year's points. This mechanism sounds simple, but it turns every week of competition into a memory gamble: you do not just need to win, you need to win the exact events you once won.

The example the original data offers is worth remembering: a player who won the Paris Masters last year and only reaches the semifinal this year receives 400 points instead of 1,000 — losing as many as 600 points despite a deep run. That is how a good season can be punished simply because you could not repeat yourself.

In 2026, Sinner held the No.1 ranking for a long stretch. The 25-year-old Italian began the season like a machine: a 44-3 record, a win rate of roughly 93.6%, one of the best figures I have recorded at this level. But then his right knee became an issue. Since Wimbledon, Sinner has not played another match. He withdrew from the US Open. And as of now, his ability to play the closing events of the season remains a large unanswered question.

On the other side, Zverev walked the opposite path. The German has a 55-13 record this year, a win rate of roughly 80.9%. That is lower than Sinner's, but what matters is that he converted form into major titles: Roland-Garros and US Open champion within three months. At 29, Zverev has finally turned potential that was discussed for nearly a decade into real Grand Slam trophies.

That is the context. Now the interesting part: the number.

Core: how 2,470 is greater than 1,810

The current gap between Sinner and Zverev is 1,810 points — Sinner has 11,500, Zverev has 9,690. At a glance, Sinner looks safe. But that is the view of someone who reads only the ranking table and not the calendar.

What decides this is the points-defence obligation. Over the rest of the season, Sinner must defend 3,550 points. Zverev must defend only 1,080. The difference between these two figures is 2,470 — and 2,470 is greater than the 1,810 gap on the ranking table.

This is the core of the entire story: 2,470 is greater than 1,810. In pure mathematical terms, the gap between the two can be erased by the expiry mechanism alone, even before Zverev gains a single new point.

Let us break it down.

On Sinner's side, the 3,550 points to defend are distributed as follows: 500 in Beijing (China Open), 500 in Vienna, 1,000 at the Paris Masters, 1,500 at the ATP Finals, and 50 in Shanghai. The ATP Finals alone — the season-ending event for the top eight — accounts for 1,500 points, nearly half of his defence obligation. That is the largest single drop on the entire ATP calendar.

On Zverev's side, the 1,080 points to defend break down like this: 100 in Beijing, 50 in Shanghai, 330 in Vienna, 400 in Paris, and only 200 at the ATP Finals.

Looking at the two columns, one thing is obvious: where Sinner must strain hardest is exactly where Zverev carries the lightest load. In Turin, Sinner defends 1,500 points while Zverev defends only 200. The difference in that single event alone is 1,300 points — nearly the entire current gap between the two.

In other words, this season's No.1 race will not be decided by who plays better in October. It will be decided by who can still stand on court when November arrives.

Shanghai: where the race starts to move

Among the remaining events, the Shanghai Masters has a special role few notice. Both Sinner and Zverev earned only 50 points in Shanghai last year. That means both have almost maximum upside to gain points there without fearing any loss.

This is where the race ignites. If either player goes deep in Shanghai, he creates a psychological gap before the European swing. If both go deep, the race officially heats up exactly as the calendar structure suggests.

Vienna and Paris: the distillation stretch

After Shanghai, the calendar moves to Europe with Vienna (500 points to the champion) and the Paris Masters (1,000 points). This is where indoor hard court begins to dominate.

And this is where I want to pause, because it touches on a tactical angle the original data only mentioned in passing.

Indoor hard court amplifies the value of the serve and the first strike. The ball travels faster, bounces lower, and the returner's reaction time is compressed. For a tall player like Zverev — who built his entire career around the serve and the attacking forehand — these are ideal conditions. For Sinner, who relies more on movement, return, and baseline pressure, indoor hard is not a hostile environment, but it is no longer a surface he dominates the way he once did.

This is a marginal edge, not a decisive one. But in a race where every point counts, marginal edges can accumulate into a large difference.

The ATP Finals: where the crown can change hands

If I had to pick one event that decides the season, I would pick the ATP Finals in Turin.

The numbers say it all. An undefeated champion in Turin earns up to 1,500 points — the largest single-event swing on the ATP calendar. Sinner defends 1,500 points there. Zverev defends only 200.

Imagine this scenario: entering Turin, the gap between the two has narrowed to under 1,500 points. At that point, the ATP Finals becomes a winner-takes-the-crown final — whoever goes deeper wins the season. With Sinner defending seven and a half times Zverev's points at the same event, any result short of the title is a step backward for him.

Behind every tactical diagram is a person trembling, hoping, and forgetting how to breathe.

I wrote that line years ago after a sleepless night covering an event I was not assigned to. It still holds here: behind every points table, behind every defence calculation, is a person with an aching knee and a waiting calendar.

Contrarian angle: do not turn Zverev into a beneficiary

Now I want to say something many people will not like to hear.

A narrative is forming in the media, and it runs like this: Sinner is injured, so if Zverev reaches No.1, it is luck. Sinner loses the throne because of his knee, not because Zverev is better.

I disagree with that framing. Here is why.

Zverev is 29 this year. For nearly a decade, he carried the label "unfulfilled potential" — the man who always went deep but never reached the summit. That label was fair for years. But in 2026, Zverev won Roland-Garros. Then three months later, he won the US Open. Two Grand Slams in three months, at an age when many have begun thinking about retirement.

That is not luck. That is the result of a process.

And here is the physically interesting part: Zverev has played 68 matches this year. He did not rest. He did not withdraw. He accumulated points through sweat, while the leader had to sit out through injury. In sport, staying on court is also a skill — sometimes the most important one.

The original data gets one thing right that I want to emphasise: whether Sinner returns or not, Zverev still has to accumulate enough points himself. The No.1 ranking is not given. It must be earned. And Zverev is in the best position on tour to earn it: he defends only 1,080 points, meaning his downside risk is nearly zero while his upside is wide open.

That is the most favourable ranking-risk posture a player can have.

Blind spot: injury is not just absence

There is one thing most outside commentary overlooks: Sinner's knee injury is not merely "absence". It is a variable of return quality.

A player who has been out for more than five months typically loses form in a very specific order. Ball feel, return ability, and break-point conversion are the first to go. Raw ball-striking power and the serve usually return earlier. That means when Sinner returns, he may still serve well and still hit a heavy forehand, but concede breaks unusually often in his first matches.

For a man who must defend 3,550 points, every break conceded has a price. And if Sinner returns too early, he can fall into a trap: playing to protect points without the fitness to go deep, losing points at the events he most needs to win.

There is a paradox here I want to raise: sometimes returning to fewer events is better than returning to all of them. A selective schedule could help Sinner focus on the events with high defence value, instead of spreading his energy across the whole Asia-to-Europe swing. But that also raises the question of ATP mandatory-entry obligations for Masters 1000 events.

This is a grey zone of the rules that neither fans nor media usually notice until it actually happens.

Why I do not use the "letter Z" to explain this season

A few years ago I once stayed up all night to understand why a team could defend deep and still win. Russia drew the letter Z; I spent a night understanding that tactics are the language of fear. That lesson stayed with me, but I do not use it to explain the Sinner-Zverev race.

The reason is simple: this is not a story of a weaker team beating a stronger one through defence. It is a story of two top players, each building points in a different way, and one of them carrying a far heavier physical burden. There is no surprise tactic here. Just the calendar, the numbers, and one knee.

View from the stands: a race with no loser

I once wrote that an empty stadium means the applause moves into the heart; football becomes nothing but breathing. That still holds for tennis, except the breathing is measured in serves and rallies.

This season, following the No.1 race, I noticed something unusual: both players deserve their story.

Sinner deserves the No.1 spot because he played like a machine in the first half of the season, with a 93.6% win rate. He was not handed the throne, he took it. And if he holds it despite injury, it will be one of the most beautiful resilience stories in modern tennis.

Zverev deserves this chance because he waited. If he reaches No.1 for the first time at 29, it will be a "late bloomer" story of enormous media value — and could reshape his entire market segment in European advertising.

And behind them, Carlos Alcaraz — once considered Sinner's biggest rival — is out of the race with 5,560 points, more than 4,000 behind Zverev. Alcaraz has also just been through a season disrupted by a wrist injury, five months out, and a US Open quarterfinal loss to Ben Shelton. For Alcaraz, 2026 looks like a re-integration season, not a title-chasing one.

That means this year's No.1 race is a two-horse race. And this is the first time in years I have seen a No.1 race whose outcome is decided mainly by physical availability rather than form.

A note on the numbers still to be verified

Before closing, I need to say something any conscientious writer should say: the numbers in this article — Sinner's 11,500, Zverev's 9,690, the defence figures of 3,550 and 1,080 — come from initial aggregated data. They should be cross-checked against the official ATP standings before you use them for any decision.

I write this not to soften the weight of the analysis. I write it because I once misspelled a player's name three times in an 800-word piece, and a coach messaged me that very night to correct it. Since then, I have learned one non-negotiable principle: verify three times before publishing.

The structure of the story is right. But the numbers must be verified. Those are two different things, and a serious writer never lets them blur together.

Signals to watch over the next three weeks

If you want to follow this race yourself rather than wait for news, here is what I will be watching.

First, Sinner's return date. Any official announcement from his team, any entry list, matters more than any commentary. If he withdraws from Shanghai or Paris, his defence collapses before the event even begins.

Second, the Shanghai results of both players. This is the most balanced event of the remaining swing, because both have only 50 points to defend. Whoever goes deep here creates a psychological gap before the European stretch.

Third, Zverev's autumn form in Vienna and Paris. If he wins a title or reaches multiple finals, the gap will narrow before Turin begins.

Fourth, Sinner's knee status. Any hint of surgery or extended absence significantly raises the probability of Zverev reaching No.1.

And finally, the ATP Finals qualification standings. If the gap entering Turin is less than 1,500 points, that event becomes a genuine winner-takes-the-crown final.

Takeaway: the arena is not large because of the seats

The arena is not large because of the seats; it is large because of the stories that dare to stay.

I wrote that line in an article about a match with no spectators, and it has followed me here. The 2026 ATP No.1 race will not be decided by glittering titles or flashy numbers. It will be decided by a very simple and very unglamorous question: can Jannik Sinner stand on court?

If the answer is yes, we will have a fair race all the way to Turin. Sinner will have to play as if his knee does not exist, and Zverev will have to prove his two Grand Slams are a foundation, not a peak.

If the answer is no, we will witness a rare moment in modern men's tennis: a player reaching No.1 for the first time at 29, after nearly a decade of doubt. And we will witness it not because it was given to him, but because he was the only one still standing when everyone else had to stop.

That is why I will follow Shanghai this week not only as a reporter, but as a former athlete. I want to see which of the two truly wants to stay until the end of the season. Because as a friend once told me after an 800m race: finishing is not hard. Getting to the starting line is.

And Sinner stands at exactly that moment: hand on the line, eyes on the long, receding track, not knowing how his knee will answer when the referee blows the whistle.

Nguyen Thi Oanh is not a name — she is a life running forward. And in tennis, every ranking table is not just a number either. It is a season in motion, and this season is running toward Turin with a knee as its pivot.