RIO COMBAT TEAM (SHARK TANK) Elite Martial Arts Training for Kids & Adults Led by James A., First-Degree Brown Belt, under the mentorship of Diogo Gomes, owner and head coach and a highly respected 4th-Degree Black Belt, Rio Combat Team is home to a competitive, disciplined, and family-driven martial arts community. We offer high-level training for kids (ages 4+), teens, and adults in Brazilian Jiu-Jitsu (Gi &amp