Antoine is a Senior Researcher at the TMC Asser Instituut, where he coordinates the research strand on 'Advancing Public Interests in International and European Law'. He obtained his PhD from the European University Institute in 2015 after defending a thesis on the interaction between the lex sportiva (the private regulations governing international sports) and EU Law.

He is the founder and editor-in-chief of the ASSER International Sports Law Blog, founder and editor of the Yearbook of International Sports Arbitration, and a member of the editorial board of the International Sports Law Journal and International Sports Law book Series of Asser Press. His research focuses on the role of private actors in transnational law, using the lex sportiva as his main case study.