About our Club

Black Knights Jiu Jitsu is an affiliate of Tu Kaha Jiu Jitsu Academy, supervised by BJJ Black Belt Ricardo Castagna trained under Pedro Pacheco Fernandes since purple belt. Over 18 years experience in Martial Arts including Hapki Do, MMA and Brazilian Jiu Jitsu. We’re part of a highly technical team and offer High level Jiu Jitsu and Self Defence courses to all, from children to adults. More than a team we’re a family! Our club is based at two locations, inside Urban Sport Gym (Birkenhead) and at Dynamic Martial Arts Centre (Silverdale). We proudly offer world-class Brazilian Jiu-Jitsu, Muay Thai and Fitness Classes for adults, kids, families and law enforcement officials, from beginners to advanced. We have been established on Auckland's North Shore since 2014 and offer safe, clean and fun environment for people of all ages and skill levels in our dedicated training facility. We run classes most days of the week and strive to teach our students self defence, fitness, confidence, discipline and have a great time doing it! Choose from our range of classes, including beginners and advanced BJJ, Kids & Teens Jiu-Jitsu and personal instruction. Whether you’re looking to get in shape, interested in effective self-defence training or a serious martial artist and competitor, will help you achieve your goals. Join our family and start your BJJ journey today!



Mike Hall 

Professor Black Belt 1st Dan

mike hall.jpg

Ricardo Castagna

Professor Black Belt 1st Dan


Professor Ricardo has been instructing since 2014 and is the Head Coach of Black Knights BJJ and started his martial arts career at 13 years of age doing Korean Hapkido. At 16 years Ricardo transitioned to Jiu-jitsu where he trained and competed in both disciplines in white belt all the way through to purple before moving to New Zealand in 2005.

After a short BJJ hiatus, Ricardo was back into training in 2010.

Ricardo was proud to receive his black belt from Pedro (Tukaha BJJ) at the end of 2016.

Personal Achievements:

2x NZ Grappler National Champion Brown Belt 2015 & 2016 Gi

1x NZ Grappler National Champion Black Belt No-Gi 2018

1x 2nd Place NZ Grappler National Black Belt No-Gi 2019

1x NZ Grappler National Champion Black Belt Gi 2019


Marcelo Sinja

Coach Brown Belt 1st Dan

Marcelo Sinja, a native of Curitiba/Brazil, had his first contact with jiu-jitsu in 1998 through friends but had no continuity in training until 2011 where he returned to training with focus and discipline.

He participated in regional, national championships (Brazilian and southern Brazilian championships) and international championships (international open IBJJF and Abu Dhabi AJP) and most of the time being on the podium. Great lover of soft art with "old school" style always willing to help and motivate his teammates.



0210-723-432  |  knights.jiujitsu.nz@gmail.com

60-62 Mokoia Road, Birkenhead, Auckland

9 Wainui Road, (Behind JA Russel), Silverdale

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