This contribution initially provides a general overview of the main rules and principles concerning the Treaty free movement provisions. The focus is primarily on the free movement of workers and the freedom to provide services. The chapter then analyses the approach of the Court of Justice as regards nationality discrimination in sport. The chapter also addresses how EU law approaches the question of nationality discrimination in team and individual sports, as highlighted in discussions on UEFA’s home-grown player rule and eligibility requirements in Olympic sports. The chapter concludes by observing that despite the absence of a clear EU competence in the field of sport until the Lisbon Treaty, the Court of Justice of the EU has consistently adopted the same conceptual approach in cases concerning the mobility of sportsmen within the EU.