Documented path
Miura left Shizuoka Gakuen High School after less than a year and traveled alone to Brazil at age 15 to become a professional footballer. He signed with the youth squad of Juventus-SP in São Paulo and turned professional with Santos in 1986 at age 19. After playing for several Brazilian clubs, he returned to Japan in 1990 and joined Yomiuri SC, winning consecutive JSL titles and then becoming the J-League's first MVP in 1993.
Born in Shizuoka, Japan; family background not documented in reviewed sources; left home at 15 to pursue football in Brazil.
Still playing professional football at age 59, on loan at Fukushima United from Yokohama FC; the world's oldest active professional footballer.
Where the conditions came from
Each is placed on a −1 to 3 scale from documented evidence, and the three are never added together. A combined total would rank Kazuyoshi Miura against other people. Held apart, they explain why this path ran differently from another one—which is the only comparison this project supports.
The marble itself
+2Tailwind
What capability, drive, or early skill is documented in the person rather than their surroundings?
Left school at 15 to travel alone to Brazil — extraordinary self-driven initiative. Immersed himself in Brazilian football culture, learned Portuguese, and persevered through isolation and racism. Exceptional determination and adaptability.
Where it was dropped
+1Tailwind
What money, family standing, network, or permission was already in place before the work began?
Football family in Shizuoka — father was an avid fan who attended 1970 World Cup, older brother became professional. Father had links to Brazil that enabled the move. Middle-class but not wealthy.
The shape of the track
+2Tailwind
What place, timing, institution, or peer group made the next step available?
Immersion in Brazilian football culture from age 15 — the epicenter of world football. Signed with Santos FC (Pele's club) at 19. This frontier geography immersion gave him skills unavailable in Japan at the time, before the J-League existed.
A −1 is a documented headwind, not a missing value; a 0 means the sources record nothing notable either way. Annotation confidence: High. These are analyst readings of what the sources record, not measurements of merit, talent, or effort. The twenty-two scored dimensions remain available inside the deeper research detail.
What moved through the conditions
Silence in a biography is not evidence that perseverance was absent.
This is an unchosen opening or condition in the record, not an estimate of how much luck caused the outcome.
Strongest documented signals: Elite institution pipeline, Frontier geography, Direct domain exposure.
Describes the starting position, not what the person later made of it.
Strongest observed levers: Domain proximity, Started serious reps before 20, Prior reps.
Measures what was present, not whether it was inherited, earned, self-built, external, or mixed.
The timeline below shows the sequence of work and transitions around the selected early milestone. It is evidence of a path, not proof that every step was necessary.
Dominant figure at the top of a field. The tier summarizes documented career recognition through the data cutoff—not Kazuyoshi Miura's worth or future potential.
Question four · where did the leverage come from?
Each non-zero lever gets a best-supported origin, evidence signals, and confidence. Unresolved is the honest default when the biography cannot distinguish self-built, advantage-enabled, earned, external, or mixed.
One or more documented starting advantages plausibly enabled this lever.
One or more documented starting advantages plausibly enabled this lever.
One or more documented starting advantages plausibly enabled this lever.
A structural wave is external to the person, even when their position improved access to it.
One or more documented starting advantages plausibly enabled this lever.
One or more documented starting advantages plausibly enabled this lever.
One or more documented starting advantages plausibly enabled this lever.
One or more documented starting advantages plausibly enabled this lever.
This is a bounded inference from the current annotations—not a claim about private effort, merit, or the percentage of Kazuyoshi Miura's outcome attributable to any origin.
Structural luck, Encounter luck, Event luck, Outcome variance can change every arrow in the path. This successful-only dataset cannot observe the near-identical paths that did not break through, so luck stays visible and unscored.
Multiplying capacity documented later in the path. Measures what was present, not whether it was inherited, earned, self-built, external, or mixed.
Access or conditions documented near the beginning of the path. Zero means "no clear evidence in reviewed sources," not "advantage was absent."
Born in Shizuoka, Japan; family background not documented in reviewed sources. Left home at 15 to pursue football in Brazil.
Not documented in reviewed sources.
Miura's path was defined by extraordinary self-driven initiative: leaving school at 15 to travel alone to Brazil, the epicenter of world football, to train and play. This immersion in Brazilian football culture from age 15 to 23 gave him skills and experience unavailable in Japan at the time. Returning to Japan in 1990, he joined Yomiuri SC and won consecutive JSL titles, then became the inaugural J-League MVP in 1993 at age 26, riding the wave of Japanese football professionalization. Family background is not documented, but his trajectory reflects constraint-driven self-creation rather than inherited advantage.
advantage confidence: Medium · source count: 4 · audit: partial_source_verification · status: subagent_researched_beta