Japan's top football league makes a historic shift to a two-year calendar format
In short: For the first time since its 1993 inception, the J1 League has abandoned its traditional single-year schedule. The 2026–27 season marks a major structural transition to a summer-to-spring format, aligning Japanese professional football with global standards. This shift fundamentally alters the rhythm of the sport in Japan, impacting everything from transfers to training.
The 2026–27 J1 League represents the 34th season of Japan's premier football competition. This transition to a two-year calendar is a significant departure from the league's history, which had exclusively operated on a single-year basis from late winter to early winter since 1993. This change marks the 12th season since the league rebranded from J.League Division 1, signaling a new era for the organization.
Defending champions Kashima Antlers enter the season following a historic 2025 campaign, where they secured their ninth top-flight title. This victory was particularly notable as it was their first league championship since 2016 and their first major trophy since the 2018 AFC Champions League. As the league evolves, the competitive landscape has shifted with the relegation of Yokohama FC, Shonan Bellmare, and Albirex Niigata, who concluded stays of one, eight, and three years respectively.
New blood has entered the top tier, including Mito HollyHock, who are making their debut in the J1 League after winning the 2025 J2 title. They are joined by V-Varen Nagasaki and JEF United Chiba, the latter returning to the top flight for the first time since 2008. These clubs must navigate complex squad regulations; while there are no limits on signing foreign players, teams are restricted to five foreign players per matchday squad, with specific exemptions for players from partner nations like Thailand, Vietnam, and Indonesia.
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- Summary by Intellect · source: 2026–27 J1 League
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