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Integrated Ground Fighting Systems: Pioneering Grappling Excellence

Step into the world of Integrated Grappling Systems, a groundbreaking grappling system founded by the late Sifu Larry Hartsell. As an original student of Bruce Lee, Hartsell's legacy extends beyond being a renowned instructor and bodyguard to the stars—he is the visionary behind the Jun Fan Jeet Kune Do Grappling Association, the foundation of this hybrid system.

Integrated Ground Fighting Systems is a dynamic fusion of grappling arts including those meticulously studied and tested by Hartsell over decades as well as the various grappling systems Sifu Jeramiah Giehl has studied as well. Acknowledged by Sifu Dan Inosanto as "the premier Jeet Kune Do fighter of our time," Hartsell's creation blends techniques from Jeet Kune Do, Judo, Russian Sambo, Brazilian Jiu-Jitsu, Greco-Roman and Freestyle Wrestling, Japanese Shooto, Filipino Dumog, Indonesian Silat, and Catch As Catch Can Wrestling. The result is a reality-based system centered on the "grappling range."

This no-nonsense system of grappling and ground fighting serves as a powerful supplement to any martial art style or can stand alone as a complete and effective means of self-defense. Sifu Jeramiah Giehl, Black Belt in Combat JuJitsu, and Shorinji Ryu JuJitsu under Sensei David Tice, 5th Level Professional Grappler, an Associate Level Instructor through the Jun Fan Jeet Kune Do Grappling Association under Sifu John Doty, Blue Belt in Brazilian Jiu-Jitsu, and High School Wrestler, leads the training at Cali Combat Systems.


Integrated Ground Fighting Systems transcends the conventional, offering an integrated grappling system designed for sensitivity, flowing positioning, escapes, takedowns, throws, lockups, and ground fighting. Drawing from Combat JuJitsu, Wadu Ryu JuJitsu, Judo, Shornji Ryu JuJitsu, Catch-As-Catch-Can, Russian Sambo, Shoot Wrestling (Shooto), Trapfighting (a blend of Wing Chun, JKD & Shooto), KinaMutai, KunTao Silat, Filipino Dumog, and Brazilian Jiu-Jitsu, this system existed before the term "Mixed Martial Arts" became common.

Operating under the premise of a no-holds-barred fight, Integrated Ground Fighting Systems embraces a diverse range of styles, rejecting limitations imposed by singular systems. The training incorporates Paul Vunak's KinaMutai asymmetrical grappling system, enhancing its adaptability and real-world applicability.

Sifu Jeramiah Giehl, holding a Black Belt in Combat JuJitsu as well as ShorinJi Ryu JuJitsu, along with a Level 5 Professional Grappler designation, infuses his extensive experience into teaching Integrated Ground Fighting Systems. Sessions are open to students from any system, emphasizing practical training without the need for traditional uniforms (Gi).


Integrated Ground Fighting Systems delves into the intricacies of the grappling range—positioning, escapes, takedowns, and throws. Recognizing the significance of this range in self-defense scenarios, the training embraces a philosophy that size and strength are irrelevant when proper technique is consistently practiced.

The curriculum includes a mix of South East Asian grappling methods, emphasizing the use of pinching and biting pressure points, elbows, knees, and head-butts for self-defense purposes. This unique approach ensures a functional combination of grappling martial arts suitable for law enforcement, bodyguards, correctional officers, bouncers, and individuals seeking effective self-preservation.


The Integrated Ground Fighting Systems class caters to diverse levels, with each session featuring a structured lesson plan. Training sessions are integrated with various submission drills to ensure technique precision, positional drills, submission drills, and isolation wrestling create a robust training regimen, developing both submission skills and endurance.

Areas covered in the curriculum include takedowns and throws, counters and reversals, strong and tight positions, kinesthetic perception, prevention of positions, escapes, submissions, and defense against strikes and weapons. The system provides valuable knowledge for grappling, stick fighting, self-defense, filthy MMA, and street survival.


Sifu Jeremiah Giehl's teachings draw inspiration from esteemed instructors such as Professor David Tice (Catch Jiu-Jitsu), Sifu Paul Vunak (KinaMutai), Sifu John Doty (Jun Fan JKD Grappling Instructor under Sifu Larry Hartsell), and others. The Submission Grappling at Cali Combat Systems encapsulates a wealth of knowledge gained from these influential sources, shaping a comprehensive and effective approach to ground fighting. Whether you seek tournament prowess, self-defense acumen, or a well-rounded Filthy MMA skill set, Integrated Ground Fighting Systems at Cali Combat Systems promises a transformative and empowering experience.

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