Frank Rosenthal is a Brazilian jiu-jitsu black belt under Doug Pelinkovic, who also worked extensively with John Danaher, and Carl Massaro, being a product of the Renzo Gracie team network who also spend time with ADCC veteran Ryan Hall at 50/50 Jiu-Jitsu Academy later in his career. Rosenthal made his name while competing in the no-gi, submission-only competitive circuit where he conquered well-respected events such as the RISE and Onnit Invitational tournaments.