This paper explores the implications of an emerging global administrative law for global sports law. It examines the theoretical underpinnings of lex sportiva as a transnational legal order and suggests that it has begun to internalize sufficient principles of substantive and procedural justice, through a process of juridification, to be able to argue for a limited immunity from legal intervention and regulation. But the increasing role of the IOC as a global regulatory body for international sport and the wider role of the Court of Arbitration for Sport is changing the character of the regulatory regime. It has become more a system of transnational private regulation. As such the development of a global administrative law, which seeks to control the private exercise of governmental type powers, is a coming challenge that lex sportiva needs to address.