Answer
Cesar Gracie, a renowned Brazilian jiu-jitsu black belt and founder of the Gracie Jiu-Jitsu Academy, served as Jake Shields' coach. Shields, a decorated grappler and mixed martial artist, trained under Gracie's tutelage, honing his skills in grappling, submissions, and overall fighting strategy. Gracie's guidance and expertise played a pivotal role in Shields' success, shaping his technical prowess and competitive mindset.