Football governing bodies UEFA and FIFA had no right to threaten clubs with sanctions for joining a planned Super League, a Madrid commercial court ruled on Monday.
The court said that Europe's UEFA and global body FIFA were guilty of anti-competitive practices and abusing their positions.
In a ruling that can be appealed, judge Sofia Gil Garcia said that the two organizations must end their practices which had violated European Union law.
The case was started by Super League company A22 against UEFA, FIFA, the Spanish league and the Spanish football federation.
It came after the European Court of Justice earlier this year also ruled that UEFA and FIFA had abused their position and said that a rival competition must be possible which however doesn't mean that a Super League must be approved.
Like after the ECJ ruling, UEFA said in a statement the Spanish ruling "has not given the green light to, nor has it approved, projects like the Super League."
UEFA has modified its rules and judge Garcia also said that the Super League will not take place in the way originally planned, meaning she couldn't rule on a abstract competition.
Spanish league chief Javier Tebas struck a smilar note as UEFA in a statement on X, formerly Twitter.
"It is important to make it clear that the judge (following the ECJ) is asking FIFA and UEFA to ensure that the rules for new competitions are transparent and guaranteed, but she is not giving her blessing to the Super League," he said.
A22 head Bernd Reichart meanwhile welcomed the Spanish ruling, saying that "the era of the monopoly is now definitively over.
"We look forward to continuing our dialogue with clubs of all sizes to improve club football at international level to make it more accessible and compelling for fans of all ages.”
The Super League was first planned in 2021 with 12 clubs from England, Spain ad Italy but flopped instantly after wide-ranging protests from fans, politicians and football bodies.
Only Real Madrid and Barcelona remain interested in the project these days.