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About our Club

Black Knights Jiu Jitsu is a Wolrd Class Jiu Jitsu Academy, supervised by BJJ Black Belt 2nd Dan Ricardo Castagna originally from Sao Paulo Brazil where all started early training in Judo as a youngster, than Hapki Do and Brazilian Jiu Jitsu, More than 30 years experience in Martial Arts. We’re part of a highly technical team and offer High level BJJ, Submission Grappling and Self Defense. Our club is based at two locations, inside Urban Sport Gym (Birkenhead) and at Dynamic Martial Arts Centre (Silverdale). We proudly offer the traditional Brazilian Jiu-Jitsu 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 defense, fitness, confidence, discipline and have a great time doing it! Choose from our range of classes, including beginners, advanced BJJ, Kids & Teens BJJ or 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 us now and get 24/7 access to the gym with your membership! Weights area, kicking bags , speed bags, boxing ring , bjj mats everything . No other club offers this ! We look forward to hearing from you!

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Mike Hall 

Professor Black Belt 1st Dan

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Professor 2nd Dan Michael Hall has been involved in BJJ since yearly 2000's, He is one of the first BJJ students from Pedro Tukaha BJJ and helped develop the academy throughout the years. Mike has competed and medaled on lots of different tournaments around south asia .

He knowledge of the art is far beyond the normal black belt. Mike is always studying the art and passing his passion and expertise to our students. He's got tremendous ability to instruct people to achieve their maximum potential on and off the mats. Very methodical and detailed instruction and he is always happy to go the extra mile to teach our team the best BJJ available.


Ricardo Castagna

Professor Black Belt 2nd 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 made the transition 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 and was proud to receive his black belt from Pedro (Tukaha BJJ) at the end of 2016.

Ricardo is very passionate about BJJ and martial arts in general. Always studying the Art to pass on to the new generations.

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 2nd 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 enthusiast of the gentle art with "old school" style always willing to help and motivate his teammates.

Here in NZ Marcelo is always present on all the tournaments and always been collecting medals and representing the team ! 

  • 6 Months Membership

    Every week
    Perfect for beginners looking for an introduction to BJJ
    Valid for 28 weeks+ 7 day free trial
    • Unlimited BJJ Classes and 24/7 access to Gym Equipment
  • 12 Months Membership

    Every week
    Perfect for beginners looking for mid term commitment
    Valid for 52 weeks+ 7 day free trial
    • Unlimited BJJ classes and use of Gym Equipment 24/7
  • 18 Months Membership

    Every week
    Perfect for a long term commitment into learning BJJ
    Valid for 80 weeks+ 7 day free trial
    • Unlimited BJJ Classes and Use of Gym Equipment 24/7
meet the staff
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