"You can only fight the way you practice. "


Brazilian jiu-jitsu is a martial art, combat sport system that focuses on grappling and especially ground fighting. Brazilian jiu-jitsu was formed from Kodokan judo ground fighting fundamentals that were taught by a number of individuals including Takeo Yano, Mitsuyo Maeda and Soshihiro Satake. Brazilian jiu-jitsu eventually came to be its own art through the experiments, practices, and adaptation of judo through Carlos and Helio Gracie (who passed their knowledge on to their extended family) as well as other instructors who were students of Maeda, such as Luiz Franca.

BJJ promotes the concept that a smaller, weaker person can successfully defend against a bigger, stronger, heavier assailant by using proper technique, leverage, and most notably, taking the fight to the ground, and then applying joint-locks and chokeholds to defeat the opponent. BJJ training can be used for sport grappling tournaments. However it can be used in some self-defense situations and does serve its purpose. Sparring (commonly referred to as rolling) and live drilling play a major role in training, and a premium is placed on performance, especially in competition, in relation to progress and ascension through its ranking system.

Brazilian jiu-jitsu is not solely a martial art, but it is also a sport, a method for promoting physical fitness and building character in young people. Ultimately, a way of life.


Professor Joey Armstrong    achieved his black belt  by Ralph Gracie. 

Professor Armstrong leads and instructs our Brazilian Jiu-Jitsu program.



Professor Joey Armstrong
2013 black belt by Ralph Gracie

Professional MMA:

2006 Warrior Cup 1, Stockton, CA: Loss – Decision (Unanimous)

2006 Cage Combat Fighting Championships “Throwdown at the Pavilion”, Santa Rosa, CA: Win – Decision (Unanimous)

2007 Cage Combat Fighting Championships “Undefeated”, San Mateo, CA: Win – TKO

2008 Strikeforce “Young Guns 2”, San Jose, CA: Win - TKO

2008 Gladiator Challenge 75 “Erin-Go-Brawl”, San Francisco, CA: Win - TKO

2008 Gladiator Challenge 80 “Summer Showdown”, San Francisco, CA: Win – Decision (Unanimous)

2008 War Gods “Do or Die” Fresno, CA: Loss – Decision (Split)


2004 United Gracie, San Francisco, CA (Gold)

2005 United Gracie, San Francisco, CA (Gold)

2006 Pan Americans, Carson, CA (Bronze)

2006 Gracie Open, Pleasant Hill, CA (Gold)

2006 United Gracie, San Francisco (Gold)

2010 Jiu Jitsu by the Bay, Hayward, CA (Gold)

2011 American Cup, San Jose, CA (Bronze)

2012 American Cup, San Jose, CA (Bronze)

2012 NAGA, San Francisco, CA (Gold)

2014 American Cup, San Jose CA (Silver)

2016 NAGA, Portland, OR (Gold)

Jeremy Harrington     

  • 2016 brown belt by professor Joey Armstrong (Tri City Judo Bjj) 
  • purple belt BJJ by professor Michael Chapman (Pendleton OR)
  • blue belt BJJ by Matt Thornton (founder of SBGI)
  • 2011 owner Solid Base Jiu-Jitsu, Pendleton OR
  • 12 MMA fights career thus far and continues to compete in BJJ tournaments