picture of Ronaldo Junior

Ronaldo Souza Junior is a jiu-jitsu black belt representing Atos. He is a gi and no-gi IBJJF Pan champion. Nicknamed "The Human Highlight Reel," Ronaldo is known for his explosive and fan-friendly jiu-jitsu characterized by dynamic guard passing. 

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Isaac Doederlein Becomes 6th American World Champ Just Before Son's Birth

Jun 6, 2022

Isaac Doederlein made history in his first Worlds final after years of pursuing the title, and recounts his trials in the climb to gold.