Guest Editorial Original Papers Egon Franck, Philipp Theiler One for Sure or Maybe Three. Empirical Evidence for Overtime Play from a Comparison of Swiss Ice Hockey and the NHL Agnes Bäker, Mario Mechtel, Karin Vetter Beating thy Neighbor: Derby Effects in German Professional Soccer Stephan Nüesch, Hartmut Haas Empirical Evidence on the “Never Change a Winning Team” Heuristic Bernd Süssmuth, Stefan Wagner A Market’s Reward Scheme, Media Attention, and the Transitory Success of Managerial Change Eva Marikova Leeds, Michael A. Leeds, Gold, Silver, and Bronze: Determining National Success in Men’s and Women’s Summer Olympic Events Richard Kamst, Gerard H. Kuper, Gerard Sierksma, Bertus G. Talsma Inner-Outer Lane Advantage in Olympic 1000 Meter Speed Skating Robert Baumann, Bryan Engelhardt, Victor A. Matheson Employment Effects of the 2002 Winter Olympics in Salt Lake City, Utah Marco A., Haan, Ruud H. Koning, Arjen van Witteloostuijn The Effects of Institutional Change in European Soccer Helmut Dietl, Tobias Duschl, Egon Franck, Markus Lang A Contest Model of a Professional Sports League with Two-Sided Markets Bernd Frick, Björn Wallbrecht Infant Mortality of Professional Sports Clubs: An Organizational Ecology Perspective Book Review Manfred Gilli, Dietmar Maringer, Enrico Schumann Numerical Methods and Optimization in Financ