The power to develop and test theories The use of data is central to the advance of foundational theories in any field. In mixed martial arts, the massive volume of fight data that has accumulated over time enables us to conduct systematic testing of layman theories about mixed martial arts competition outcomes, and to develop a rigorous conceptual framework for professionals within the field. The use of data from hundreds of fights, this book provides empirically tested answers to a long list of questions such as these: What are the effects of height and reach advantage on a fighter’s likelihood of winning an MMA fight? Does age have an effect on how a fighter wins? Is there a place of birth advantage? Do fighters’ pre-fight rituals have an effect on the way fights end? Do southpaw fighters have an advantage over their orthodox opponents? How does a fighter’s weight have an effect on the kinds of injuries experienced in a fight? Are fighters from certain countries better than others? How as it should be can fight outcomes be predicted? Utilizing a scientific approach, the book tests common theories about what drives success in mixed martial arts combat.