Judges in the US have opened up the playing field for a challenge to the National Football League's clothing license deals.

The US Supreme Court has reversed a Court of Appeals ruling on the application of the antitrust laws to the NFL.

It follows an appeal last year by hat maker American Needle against the NFL's exclusive licensing deal with sporting goods firm Reebok.

American Needle claims that each of the 32 teams should be considered a separate businesses, rather than a single entity under antitrust laws.

The court ruled for the case to be remanded for further proceedings.

Click here to read the full Supreme Court ruling.