Brazilian jiu-jitsu 

Brazilian jiu-jitsu is a martial art and combat sport system that focuses on grappling and especially ground fighting. Brazilian jiu-jitsu was formed from Kodokan judo ground fighting fundamentals that were taught by a number of individuals including Takeo Yano, Mitsuyo Maeda and Soshihiro Satake.

Brazilian jiu-jitsu eventually came to be its own combat sport through the experiments, practices, and adaptation of judo and jujutsu through Carlos and Helio Gracie (who passed their knowledge on to their extended family) as well as other instructors who were students of Maeda, such as Luiz Franca