Sunday, March 8th, 2009

Welcome to the Rosendo Diaz Brazilian Jiu-Jitsu Academy!!

Celebrating 20 years of teaching Jiu-Jitsu!

The Montgomery County and Bucks County Premier Martial Arts Academy!

The Rosendo Diaz Brazilian Jiu-Jitsu Academy is a certified black belt academy under the 3rd Generation Jiu-Jitsu Team. Rosendo Diaz received his black belt in August 2003 from Royler Gracie and David Adiv. The Rosendo Diaz Brazilian Jiu-Jitsu Academy is the headquaters for the 3rd Generation Jiu-Jitsu Team.

The academy is committed to providing each student with quality instruction in the art of Gracie Jiu-Jitsu within a friendly atmosphere. This cutting edge art famous for it’s devastating ground fighting techniques also implements methods for throwing, self-defense, and mixed martial arts (MMA).

Whether you are an experienced martial artist wishing to add grappling to your arsenal, or a beginner looking to learn one of the most powerful forms of self defense, you will find the Rosendo Diaz Brazilian Jiu-Jitsu Academy a premier school for all your training needs.

And now, we are offering 2 WEEKS OF WORLD-CLASS JIU JITSU INSTRUCTION ABSOLUTELY FREE!! No cost, no obligation.  GO BEYOND THE ORDINARY!!! Come in today experience the best, most comprehensive Gracie Jiu Jitsu curriculum anywhere!

To begin the journey and take advantage of our 2 week trial offer, email us rdbjjacademy@gmail.com or call us at 267.476.1858. Whether your goals involve personal fitness, increased confidence, realistic self-defense or training to become the next Mixed Martial Arts champion, we CAN and WILL help you get there!


Belt Promotions and Tying The Belt Ceremony

No Comments Friday, April 6th, 2018

Under: Past News


So why do we at the 3G Team tie knots into our belt?


Over the years I’ve had the opportunity to train with many instructors at many different academies and was able to witness their promotion ceremonies. Each one had their own distinct style.


Some ran their students through a gauntlet while others used extremely creative methods to surprise them. Some were such big academies that there was no surprise in it for the students but these academies created large events to celebrate the accomplishments. Each for me was impressive.


The reasons why we tie knots into our belts goes back to the early 90’s. I was watching a friend that taught another style of ju-jitsu go through his promotion ceremony. This was what I call my “caveman Jiu-Jitsu” days, which is another story altogether. I can’t honestly remember what it meant or even if he explained to me what the relevance was for them, but I immediately saw significance in that knot.


It wasn’t until 2003 when I earned my black belt and started doing my own promotion ceremonies that I started using this method. In those ten years between seeing this knotting of the belt and actually using it for my own promotions, I developed my own theories of what it means. So with that let’s get to it.

What’s the point of the knot? I’ve got three reasons.


1. It signifies the “locking in” of the information and really serves as a reminder of the experiences and lessons learned during that time in the belt.


2. The tightening of the knot by the instructor and student signifies the bond not only between the two but also the bonds of the brotherhood/sisterhood of Jiu-Jitsu as a whole. At the higher ranks, not only the instructor but also training partners of higher, lesser or equal rank are invited to take part. Once you achieve that high a rank in Jiu-Jitsu it is not solely the instructor that got you to where you are but anyone and everyone you have trained with and learned from that got you to where you are.


3. The strands vs. the loop. Summed up, the one being promoted is the strands; a disorderly mess of techniques. The loop represents those that have worked to bring order or flow to your movements. The instructor or those who took part in your development hold the loop; they bring order and understanding to your Jiu-Jitsu. The student holds the strands, his disorder, his mess of techniques. Together they tighten the knot, locking in what they know and with the hope of some day attaining some level of perfection of movement.

Class Schedule For Jiu-Jitsu and Muay Thai

No Comments Tuesday, March 27th, 2018

Under: Past News


Schedule of classes at 3rd Generation Jiu-Jitsu Academy Harleysville


Mondays –  Muay Thai Kickboxing – 6pm to 7pm

Jiu-Jitsu Fundamentals – 7pm to 8:30pm


Tuesdays – Lunch class – 12pm to 1pm

Jiu-Jitsu Fundamentals – 6pm to 7pm

Jiu-Jitsu all levels – 7pm to 8:30pm


Wednesdays – no gi class – 6:30pm to 8pm


Thursdays – Lunch class – 12pm to 1pm

Muay Thai Kickboxing – 6pm t0 7pm

Jiu-Jitsu all levels – 7pm to 8:30pm


Saturdays – Open mat training – 10:30am t0 12pm


*Adult classes for men/women ages 14 years and up.

**At this time we do not have a kids program, keep checking back though.

***We have more classes and open mats that are not listed in this schedule–wanna know when and what they are?  You gotta take advantage of our 2 week free trial first.  Call or email for more information 267.476.1858 or rdbjjacademy@gmail.com

Muay Thai Kick Boxing Seminar

No Comments Tuesday, February 13th, 2018

Under: Past News



Ajarn Kevin Seaman of The World Thai boxing Association & Smiling Tiger Muay Thai will be offering a Muay Thai seminar to all students. Beginner- Advanced. Kevin is a Senior Instructor under Ajarn Chai Sirisute, President and Founder of The World Thai Boxing Association, having over 30 years experience in the art of Muay Thai. The experience will be hands on training and individualized coaching to help you develop to the best of your ability.

Date: Saturday, Feb 24th
Seminar Cost $50.00

Everyone is welcome to attend

3rd Generation Jiu Jitsu
274 Hunsberger Lane

Harleysville, PA

Preemptive Self Defense

No Comments Saturday, January 20th, 2018

Under: Past News

It started with a bump on the shoulder.

We’d run into each other accidentally, but in this day and age, it doesn’t take much more than that to escalate into something more.

Without even thinking, I’d grabbed his hand as if to shake it and placed my opposite hand on his shoulder.

“Hey, I’m so sorry,” I said. “Are you okay?”

Though my apology and tone definitely helped defuse any potential situation, my lack of fear in initiating physical contact with him helped even more.

Forget the fact that I put myself in a position to defend myself by grabbing his hand and shoulder. It was that we’re so unused to being comfortable with that type of contact. We don’t know what to do when it happens.

Jiu jitsu solves that problem.

Rolling with partners you trust, allowing yourself to be in those sometimes uncomfortable positions and situations takes away that apprehension. 

And not just for adults. It’s never too early to learn to remove that fear.

If this hits home, for either you or someone you care about, email us at rdbjjacademy@gmail.com or stop in to our new location.

274 Hunsberger Lane
Harleysville, PA 19438

Let’s get in touch.

Promotion Ceremony

No Comments Wednesday, January 17th, 2018

Under: Past News


It was a great night Tuesday, January 16, 2018 as we promoted 6 deserving individuals.


Bill Mann was promoted to Black Belt

Danny Katz was promoted to Brown Belt

Ron McMahon was promoted to Purple Belt

Collin McConnell was promoted to Purple Belt

Aidan Wilson was promoted to Blue Belt

Jay Nakahara was promoted to Blue Belt




Jiu Jitsu Conversation

No Comments Monday, January 15th, 2018

Under: Past News

Jiu jitsu should be like a conversation.




When you’re new to BJJ, every roll is a shouting match, where no matter what, you have to be right. When you’re with another white belt, it’s an argument no one is winning.


As time goes on, and your experience grows, your voice quiets down somewhat. You still want to be right all the time, but you learn to listen to the other, more experienced side, too. You even laugh as you see some of yourself in the newer students who follow.


At the highest level is when the best conversations happen. No one needs to be the loudest or the smartest. There are no arguments here. Only discussions. A thoughtful back and forth where both sides win, no matter the actual outcome.


Visit 3rd Generation Brazilian Jiu Jitsu today.

Come see what everyone is talking about.

274 Hunsberger Lane

Harleysville, PA 19438



Visiting Instructors

No Comments Thursday, January 4th, 2018

Under: Private Lessons

November and December were the months of visiting instructors.  We are so thankful to our friends;


Professor Eamon Knittel, from 127BJJ Manayunk, PA

Professor Fadi Khouri, Energy Fit, The Woodlands, TX

Professor Aaron Morris, Equipe Morris, Holmes, PA


For visiting our new academy and taking the time to teach and pass on their knowledge to our members.   In February, we look forward to having Professor Luis Rosa, from Harrisburg BJJ out to teach a class, stay tuned for more information. These special classes are free to our members, so take advantage.




Lunch Jiu-Jitsu Class

No Comments Thursday, January 4th, 2018

Under: Past News



Instead of choking down that hoagie at lunch, get yourself over to 3rd Generation Brazilian Jiu Jitsu on Tuesdays and Thursdays and choke people!


From 12-1 pm, our own Danny Katz runs gi and no-gi classes for all levels.


Don’t make him train alone.


Put down those chips and visit us at 274 Hunsberger Lane, Harleysville.


Danny’s waiting…

Give The Gift Of Jiu Jitsu

No Comments Friday, December 15th, 2017

Under: Past News

Stumped for holiday gift ideas? Nothing fits better than a gift certificate for classes at 3rd Generation Brazilian Jiu Jitsu!  Pick up one of our gift certificates for someone you love.


For only $175.00 you can give that special someone 3 months of unlimited training at the academy.  We’ll give you a nifty certificate and we’ll even throw in one of our seriously cool academy t-shirts.


You can pick up your certificate at the academy 274 Hunsberger Lane, Harleysville, PA (across the way from Wawa) or call us at 267.476.1858 or email us at rdbjjacademy@gmail.com to secure your gift.


This offer is good until January 31, 2018, so take advantage now!

Jiu Jitsu


New Facility In Harleysville

No Comments Wednesday, October 25th, 2017

Under: Past News

We Have Moved

New facility, more classes!!!!

Come visit us at

274 Hunsberger Lane, Harleysville, PA

Right across the way from Wawa.

Call 267.476.1858

Email rdbjjacademy@gmail.com

Crazy Hot Jiu Jitsu Training

No Comments Friday, July 7th, 2017

Under: Past News

It’s Summer!!!!


No better time to start training in Jiu-Jitsu.


Learn the most kick ass Self defense system in the world!


Get in crazy shape fast!!


Call us to find out about our special “Summer Start Up” pricing!!!


Call today 267.476.1858

3rd Generation Wins Good Fight Team Title

No Comments Friday, April 7th, 2017

Under: Past News


March 11, 2017, the 3rd Generation Jiu-Jitsu Team showed up at the Good Fight, Tournament of Brotherly Love and walked away with the team title.  This team trophy added another mark to our growing list of team titles.  In the next few weeks we will be compiling a list of team titles we’ve won over the course of the 2016-17 seasons.

The 3rd Generation Jiu-Jitsu Team is a growing force in the sport Jiu-Jitsu community.  Look out! Cause here we come!

Kickboxing And Muay Thai Classes

No Comments Friday, April 7th, 2017

Under: Past News

Our Muay Thai, Kickboxing classes are awesome!  You got to get in on it.


  • Great Cardio Workout

  • Self Defense

  • Flexibility

  • Overall Healthy Lifestyle


Classes for adults are held on Monday’s at 6:30pm and Thursday’s 6:30pm .



Introducing Our New Muay Thai Instructor

No Comments Friday, January 13th, 2017

Under: Past News


Muay Thai Instructor


Bill Thanel has an extensive  resume when it comes to the Martial Arts, we welcome Bill to our academy.  Bill will be heading up our kids kick boxing program as well as our adult Muay Thai program.


Bill Thanel

Black belt under William Acosta in Karate.

Muay Thai Kru certified under Kevin Seaman.

Brown Belt in Gracie Jiu-Jitsu under Phil Migliarese and Frank Ambrifi of Balance MMA.

Navy Seal Lists BJJ As A Self Defense Must

No Comments Wednesday, December 7th, 2016

Under: Past News

Navy SEAL Jocko Willink was recently interviewed about which martial arts styles are the best for self defense.  Check out his interview.


And come visit us at Facebook…you’re guaranteed to love our content.  CLICK HERE!

Our Academy is Celebrating our 20th Year.

No Comments Saturday, September 17th, 2016

Under: Past News

The Rosendo Diaz Brazilian Jiu-Jitsu Academy opened its doors in 1996 and never looked back. Over the years we have trained and taught men, women and children how to defend and feel confident about themselves.  We’ve taught law enforcement officers the most up to date defensive tactics. We’ve helped our students become champions both on and off the mat.  But most importantly, we’ve carried the flag and helped spread the word for the most effective martial arts in the world, Gracie Jiu-Jitsu.


This 20th year we are celebrating by offering you 3 months of unlimited training in Gracie Jiu-Jitsu for only $149.00, we’ll also throw in a pretty cool t-shirt.


Come on in, try out a class, kick the tires so to speak.  Visit us on Facebook , meet our members there and hear their stories plus you can view videos of us doing our thing.  Call us if you have any questions or would like to set up a visit 610.850.1604

Female Self Defense and Diffusion Class

No Comments Tuesday, September 6th, 2016

Under: Past News

Join Black Belt, Sheri Hockman on Sunday September 25 from 11-12:30pm for a female confrontation and diffusion seminar.  This seminar is open to any female interested in learning how become more aware of their surroundings.  This seminar is a must for high school and college age girls but females of all ages can benefit.  To register yourself and loved ones please visit www.bjjunderdog.com


Join Our Jiu-Jitsu Family

No Comments Monday, August 29th, 2016

Under: Past News

Gracie Jiu-Jitsu

Gracie Jiu-Jitsu

Gracie Jiu-Jitsu is not only the most effective form of self defense but it’s more importantly it’s one of the healthiest lifestyle choices you can make.  Come out and experience 2 weeks of unlimited training at our academy.   Visit us today or email us for more information heelhook21@aol.com

Huge 3rd Generation Seminar and Promotion Ceremony

No Comments Sunday, May 22nd, 2016

Under: Past News

Special thanks go out to all the folks at Harrisburg BJJ & Judo for coming out to the Rosendo Diaz leg lock seminar today.  Major congratulations go out to Chan Williams, Luis Rosa and Shaun Raber for earning their black belts.


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Jiu Jitsu Vs The World Documentary

No Comments Tuesday, February 9th, 2016

Under: Past News

Heard about Jiu-Jitsu but you don’t know the first thing about it?  Maybe you don’t think it’s for you?  Guess again!  Take a look at this exciting and informative documentary that helps explain what Jiu-Jitsu is and helps dispel many of the myths associated with Brazilian Jiu-Jitsu.  Remember, you don’t have to be a fighter in the UFC to learn BJJ.  Gracie Jiu-Jitsu was developed for regular people to help them be prepared to defend themselves.


After watching the documentary, give us a call and get started on a new path towards a healthier lifestyle.  267-476-1858.