Jannik Sinner won his first Grand Slam in 2024 and, before his 25th birthday, had five major titles and a Career Golden Masters — the youngest man ever to win all nine Masters 1000 events. He reached the top from an unlikely start: a junior national skiing champion in the Italian Alps who did not fully commit to tennis until he was 13. That is a lot of ways to measure one player. Below he turns up in eleven rankings — sometimes at the very top, sometimes nowhere near it — each a different way of asking the same question: how good is Jannik Sinner, really?
The catch is that the answer keeps changing. Open a different list and he becomes a different player — a runaway favourite on one, a distant underdog on the next.
The best in the world, right now
Start with the simplest question. Sinner has spent much of the mid-2020s at world No. 1, and the young rivals chasing him are exactly that — chasing.
The greatest of all time
Widen it to all of history and the room gets crowded fast. Sinner has five Grand Slam titles; the names he is measured against here carry fourteen, twenty, twenty-four. It is a hard conversation to enter with a five-year head start.
The most dominant No. 1 ever
In 2026 he went 44–3 and swept all nine Masters 1000 titles — the youngest man ever to complete the set. It is a ferocious run of form; the question is how it holds up against decades of other people's records.
King of the hard courts
Narrow it to concrete — his surface — and the picture brightens. Three of his five majors came on hard courts, and this is where his case against the all-time greats is strongest.
On the lawns of Wimbledon
Two of those majors came on grass — back-to-back Wimbledon titles in 2025 and 2026. A serious grass-court record, set against players who ruled those lawns for a decade at a time.
Best of the post-Big-Three era
Clear Federer, Nadal and Djokovic out of the frame and the field thins quickly. Against the players meant to inherit the game, Sinner has been the one setting the pace.
The greatest Italian ever to hold a racquet
Bring it home. Italy has produced Grand Slam winners and Davis Cup heroes, but none who climbed to No. 1 and stayed there. On home soil, this may be his strongest case of all.
The greatest Italian athlete, full stop
Now open it to every sport the country has ever loved — MotoGP legends, cycling icons, Olympic sprinters. A far tougher room, and a reminder of how much history he is standing next to.
Best of those who never won Paris
Here is the honest one. For all he has collected, Roland Garros is the one major still missing — the clay has been his stubborn blind spot. It lands him in a club of genuine greats who never solved it either.
Best redhead in sport
Time for a sillier lens. Judge the world's athletes on hair colour alone and Sinner's unmistakable copper mop suddenly counts for a great deal.
From the ski slopes to the top
End where he began. Before tennis, Sinner was a national-level junior skier in the Italian Alps who did not pick a side until he was 13. That backstory puts him among sport's great career-changers.
Sometimes first, sometimes a footnote
Best in the world on one list, a small name among giants on the next — it depends entirely on which question you ask. That is the whole point of a ranking: it answers one specific question and nothing more, and the moment you change the question, Sinner slides up or down with it. It is the same trick behind every ranking here — judging things two at a time.
Got someone who turns up everywhere? Build a ranking and find out where they land.
More rankings, more angles
- How Many Ways Can You Rank Fernando Alonso? — another solo-sport great, measured a dozen ways
- How Many Ways Can You Rank Kevin De Bruyne? — the same trick, applied to football
- How Rankings Are Scored: The 1000-Point System — how the numbers behind each list are worked out