Karel Weima


Karel 'Karlitos' Weima, Black belt, the head instructor of Focus Jiu-Jitsu Amsterdam. He is a highschool teacher during the day, and a Brazilian Jiu-Jitsu teacher during the evening.  His interested in BJJ started after seeing a ´tripod sweep´ being performed in a MMA match. He started training during a internship in Spain and when he came back to his hometown Groningen he just brought the BJJ back with him. Now living in Amsterdam for a while he decided it was time to add a chapter to the Focus Family.

Manoel Neto is a Brazilian jiu-jitsu black belt and founder of Focus Jiu-Jitsu – one of the most successful grappling academies in Europe. Originally a product of Nova Uniao (NU), Manoel Neto arrived in the North of Portugal during the early 2000’s decade, becoming one of the sport’s pioneers in the region while helping develop jiu-jitsu there to an international level by producing IBJJF World and European medalists and champions, as well as Abu Dhabi World Pro podium achievers such as Pedro “Paquito” Ramalho, Guilherme Jardim, Filipe Silva, Hugo Barros among others.

Manoel Neto


Alberto Guzman


Alberto Guzman is a competitive black belt from Spain. He is a supervising instructor for FOCUS JJ Amsterdam and Groningen. Alberto visits the Netherlands on a regular basis. His Martial Arts school is based in Santiago de Compostela, Spain. 

Stefan Uittenboogaard


Stefan ´Stoomboot´ Uittenboogaard, blackbelt, is one of the Netherlands´ most active competitors and has trained and competed BJJ in Brazil, The USA and in multiple European countries, where he has amassed over 90 medals. He is a multi-time IBJJF European Championships medalist, has one IBJJF World Championships silver medal, is a two time Dutch Open champion and multi-time IBJJF Open and Naga Champion.

He has an extensive background in martial arts (karate and kickboxing) but fell in love with BJJ when introduced by a friend. Since then BJJ became his true passion. Stefan is always looking to get better, so it's very rare to miss him at training. He teaches because he loves helping people better themselves in class, competition and their daily lives.
In his daily life Stefan works as a policy advisor

Joris Rookhuijzen, is a judo black belt, BJJ purple belt, olympic-lifting champ and movement scientist. He teaches the takedown class. Joris loves and competes in all grappling sports, that's why his classes are never limited to one style. Grip020 is the culmination of his passion for physical performance and martial arts. This physical training routine is specially developed for Jiu-Jitsu fighters.

Joris Rookhuijzen


 Teachers 2021