We estimate Cox models to determine proportional hazard rates in professional basketball, concerning leaving the league or changing the team by using a database covering all players of the NBA in the 90's. We predict and confirm that league-hazards depend on a player's performance. A teamswitch,...

The effects of the three-point rule in first league German soccer are tested empirically and compared to games from the German cup-competition. The inclusion of cup games ensures that changes in league games can be attributed to the three-point rule. As a result of their relative devaluation,...

Im Mai 2008 verabschiedete der Fußball-Weltverband (FIFA) eine Resolution zur sogenann-ten 6+5-Regel. Nach dieser Regel muss die Anzahl einheimischer Spieler in der Startforma-tion von Vereinsmannschaften im Profifußball stufenweise aufgestockt werden. Über die Reglementierung des Einsatzes...