This open access book explores the complexity of the lex sportiva, the transnational legal regime governing international sports. Pioneering in its approach, it maps out the many entanglements of the transnational governance of sports with European legal processes and norms. The contributors trace the embeddedness of the lex sportiva within national law, European Union law and the European Convention on Human Rights. While the volume emphasizes the capacity of sports governing bodies to leverage the resources of national law to spread the lex sportivaglobally, it also points at the fact that European legal processes are central when challenging the status quo as illustrated recently in the Semenya and Superleague cases. Ultimately, the book is also a vantage point to start critically investigating the Eurocentricity and the complex materiality underpinning the lex sportiva.