Mixed martial arts (MMA)--unarmed fighting games permitting techniques derived from a variety of martial arts and combat sports-- has exploded from the fringes of sport into a worldwide phenomenon, a sport as controversial as it is compelling. This is the first book to pay MMA the serious philosophical attention it deserves. With contributions from leading international scholars of the philosophy of sport and martial arts, the book explores topics such as whether MMA qualifies as a martial art, the differences between MMA and the traditional martial arts, the aesthetic dimensions of MMA, the limits of consent and choice in MMA and whether MMA can promote moral virtues. It also explores cutting-edge practical and ethical topics, including the role of gender in MMA, and the question of whether trans athletes should be allowed to compete in the women's divisions. The contributors to this anthology take down, ground and pound, and submit many essential questions about this fascinating recent development in the culture of sport and spectacle. This is important reading for anybody with an interest in combat sports, martial arts, or the philosophy, sociology, culture or history of sport.