Preface This document contains the papers presented at MLSA15, which is the second workshop on Machine Learning and Data Mining for Sports Analytics. The workshop was held at the European Conference on Machine Learning and Prin- ciples and Practice of Knowledge Discovery in Databases 2015 in Porto, Portugal and took place on Friday 11 September 2015. There were 15 submissions, covering a wide variety of topics. Each sub- mission was carefully reviewed by at least three program committee members. Based on the reviews, 6 papers were accepted as long paper, and 6 as short papers. We are grateful to the authors, the program committee members, and the reviewers for their time and efforts. We would also like to thank the workshop chairs, Stan Matwin, Bernhard Pfahringer, and Luis Torgo, as well as the con- ference organizers, João Gama and Alipio Jorge. Jesse Davis Jan van Haaren Albrecht Zimmermann Program Committee Sathyanarayan Anand Two Six Capital, USA Ulf Brefeld Technical University of Darmstadt, Germany Georgios Chalkiadakis Technical University of Crete, Greece Kurt Driessens Maastricht University, The Netherlands Vladimir Dzyuba KU Leuven, Belgium Martin Eastwood pena.lt/y Johannes Fürnkranz Technical University of Darmstadt, Germany Thomas Gärtner Fraunhofer IAIS, Germany László Gyarmati Qatar Computing Research Institute, Qatar Kristian Kersting Fraunhofer IAIS, Germany Arno Knobbe Leiden University, The Netherlands Richard Maclin University of Minnesota-Duluth, USA Yannis Manolopoulos Aristotle University of Thessaloniki, Greece Tim Op De Beeck KU Leuven, Belgium Johan Pisch Soccerlogic Ravi Ramineni Analyse Football Chedy Raı̈ssi INRIA Nancy, France Joris Renkens KU Leuven, Belgium François Rioult Université de Caen, France Leander Schietgat KU Leuven, Belgium Olivier Schulte Simon Fraser University, Canada Toon Van Craenendonck KU Leuven, Belgium Josh Weissbock University of Ottawa, Canada 1