Combat Sports Academy (CSA Gym) is located in Dublin, CA and is the most comprehensive Combat Sports Training Center in Northern California featuring programs in all major aspects of Self Defense, Fighting and Fitness. We’ve brought together some of the best trainers in the world, specializing in Krav Maga, Muay Thai, Brazilian Jiu Jitsu, Boxing, Wrestling, and CrossFit, all under one roof. CrossFit CSA is a division of The Combat Sports Academy.