Complex sentence: The 50-50 (Fifty-fifty) guard is a Brazilian Jiu Jitsu position invented by Roberto "Gordo" Correa and extensively used by the Mendes Brothers, Rafael and Guilherme Mendes, Bruno Frazzato, and Ramon Lemos from the Atos Jiu Jitsu Team.
Split into simpler sentences: The 50-50 (Fifty-fifty) guard is a Brazilian Jiu Jitsu position invented by Roberto "Gordo" Correa. And extensively used by the Mendes Brothers, Rafael and Guilherme Mendes, Bruno Frazzato, and Ramon Lemos from the Atos Jiu Jitsu Team.