In 2011, the e-Competitions Bulletin launched a series of Special Issues covering various areas of competition law and business sectors covering not only the European Union and its Member States, but also, where relevant, US case law. This initiative has proven to be an immediate success. The quality and interest of the papers published in e-Competitions were such that the Board decided to collect the essays and release a book. As a result, the 2013 edition of the Competition Case Law Digest was published. The second edition was released in 2015. The 2018 edition of the Digest is a selection of 30 essays on European competition and US antitrust case law covering cases up from 1990 to 2017. The Digest is structured in two main parts: Part I deals with competition rules in general (cartels, unilateral practices, mergers…), whereas Part II is dedicated to Specific Sectors (automobile, energy, insurance, sports…). Each essay consists in a synthesis of case summaries published in e-Competitions Special Issues. Each of these Special Issues gathers from 30 to 300 case summaries from the EU Member States and foreign jurisdictions. The cases commented concern mainly the 2016 period but substantial reference to previous case law is provided. This book offers a unique opportunity to draw comparisons between competition case law and policies in the EU, in the Member States, and in the US. In this time of globalization of antitrust law, monitoring and comparing different national approaches to similar cases has become crucial for practitioners and academics to understand and predict the future direction of competition law at both EU and national level. This initiative to build a corpus of information on national doctrine, legislation and precedent in the EU, US and worldwide constitutes a useful tool to interpret the forthcoming challenges and direction of competition law.