About
BJJ Black Belt Under Daisuke Yamaji Jon Calestine is a Brazilian Jiu-Jitsu black belt under Daisuke Yamaji of the Renzo Gracie Fight Academy. He has also trained extensively with Tony B., Eddie Cummings, and John Danaher. Renowned as one of the premier 145-pound grapplers of his generation in the submission-only professional grappling scene, Calestine has earned recognition for his impressive victories at the Eddie Bravo Invitational, Onnit Invitational, Sapateiro Invitational, and Finishers Sub-Only events.