The injury risk in football is high; this is due to the stop-and-go character of the game, frequent physical contacts and changes of direction. Additionally, football players may suffer from illnesses requiring appropriate treatment to avoid possible long-term health consequences. The most recent discoveries in performance diagnostics provide coaches and players with better tools to address the fitness requirements of the players or the training recommendations. These tools can also be of help in assembling a team. In this book, the authors provide up-to-date sports medical findings taken from practical experience with world class teams and make them accessible for the readers.