Willem-Alexander Devlies

Willem-Alexander Devlies

Employment & Sports

Dutch, English & French.

Admitted to Leuven Bar: 2015
Admitted to Brussels Bar: 2021



Willem-Alexander advises a wide range of Belgian and international clients on all aspects of sports law, including regulatory matters, disciplinary proceedings and employment-related disputes. His experience includes acting for athletes, clubs, intermediaries and sports federations.

Prior to working at Altius, he gained international experience at the European Volleyball Federation (CEV) in Luxembourg and a renowned sports law firm in London. He also practised law for five years in a local law firm in Leuven.

Willem-Alexander assists on a regular basis arbitrators in sports arbitration proceedings before the Court of Arbitration for Sport in Lausanne. He is also a member of the Dutch-speaking Chamber of First Instance within the Royal Belgian Pigeon Sports Association.

Willem-Alexander publishes and guest lectures on a regular basis in the field of sports law.

Willem-Alexander is recognized yearly by Who's Who Legal as a Global Leader in sports law. He also won the 2021 Lexology Client’s Choice Award for sports law in Belgium.



  • Master of Laws (Catholic University of Leuven, Belgium)
  • Master of International Sports Law (ISDE, Madrid)

Selection of publications

  • “Case Law of the Belgian Court of Arbitration for Sport between (2012-2018) and of the Court of Arbitration for Sport with Belgian parties (1992-2018)”, 2021, SSRN;
  • “Advocaten en voetbalmakelaars: belang van het onderscheid”, 2021, Jubel;
  • “Vlaams sporttribunaal van start”, 2021, De Juristenkrant;
  • “The URBSFA’s decision not to grant Excelsior Virton a professional licence appears prima facie to be incompatible with Belgian competition law”, 2020, Football Legal;
  • “Technological fraud in cycling: the perceived success of the UCI’s action plan”, 2018, World Sports Advocate;
  • "The Sell-on Clause in Football: Recent Cases and Evolutions"​, 2016, Yearbook on International Sports Arbitration 2015, T.M.C. Asser Press/Springer;
  • "UCI's evolving approach to detecting technological fraud"​, 2016, World Sports Law Report.
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