A Sports and Combat Sports series worth adding to your list.
As if bound by fate, five of the world’s most dangerous convicts escape from their respective prisons and converge at Mitsunari Tokugawa’s coliseum, where they seek but one thing: the taste of defeat. It is then Mitsunari who presents them with what they all desire—17-year-old Baki Hanma, the winner of the "most historic tournament ever," along with four other hand-selected opponents. On the spot, it is decided that a five-versus-five battle will ensue between the fighters. The combat can take place anytime, anywhere, and without any restrictions. With each contender hellbent on gauging their strength against a worthy adversary, a unique no-holds-barred, out-of-the-ring tournament erupts in the heart of Tokyo.
Plot summary from MyAnimeList. Data and images via Jikan API.