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William “Billy” Shannon III is a third-degree IBJJF black belt, Pan American Champion, and former professional cage fighter specializing in practical, high-pressure grappling systems. Based in Virginia, he is recognized for elite-level competition success, including jiu-jitsu victories over former UFC champions, and for extensive experience teaching law enforcement control and restraint techniques.
Coach Billy’s instruction centers on simple, reliable fundamentals designed to function under extreme stress, reinforcing discipline, sound decision-making, and technical efficiency in real-world encounters.
Doug Fonseca is a Brazilian Jiu-Jitsu brown belt from Rio de Janeiro, Brazil, currently learning under the guidance of IBJJF Black Belt Nick Wallace and IBJJF 3rd Degree Black Belt Billy Shannon. Growing up in one of the world’s most influential hubs of Jiu-Jitsu, Doug brings a lifelong connection to the art, blending traditional Brazilian fundamentals with a modern, pressure-oriented game.
Training under Nick Wallace and Billy Shannon, has shaped Doug into a disciplined, technically sharp practitioner. Their mentorship has pushed his development on and off the mats, emphasizing precision, consistency, and the deeper values of Jiu-Jitsu.
Doug’s path hasn’t been limited to the mats. Over the past decade, he’s applied his experience to training SWAT teams, police officers, and service members across local, state, and federal levels, bringing real-world grit to an art that demands both precision and toughness. As one of the owners of NOVA Fight Sports Doug’s approach is simple: stay sharp, stay humble, and outwork everyone in the room.