In case you are not familiar with Isaac, check this Short Bio: Isaac Doederlein is a Brazilian jiu jitsu black belt under Rubens Charles “Cobrinha”, who also trained extensively with Wellington “Megaton” Dias during his first years in the sport. Doederlein made a name for himself in the sport’s lower belt divisions, from blue belt onwards, making use of a highly dynamic ground game, one that earned him numerous medals and loyal fans across the grappling globe. One of Doederlein’s most impressive achievements was his World Championship title (2022), which made him one of the few Americans to conquer this important title in the sport’s history.