José Julián Espinosa Flores, commonly known as Julián Espinosa is a professional grappler from Costa Rica and a jiu-jitsu black belt under Arturo Wesson and Rolles Gracie who broke through as one of the most promising athletes in the sport back in 2022 as a brown belt when he conquered two important medals of the International Brazilian Jiu-Jitsu Federation (IBJJF) league, the European No-Gi (gold) & World No-Gi (silver) Championships. Espinosa would maintain his good form in his debut year as a black belt (2023), cementing his status as an important figure on the global circuit.