Martial Arts in the United States Codexery

Danaher Death Squad

Leglock-focused grappling team that split in 2021.

Danaher Death Squad (DDS) was an American submission grappling team that began as part of the Renzo Gracie Academy. Founded by John Danaher, the squad was famous for its methodical use of leglocks and for racking up wins at top tournaments like the ADCC Submission Fighting World Championship.

The team formed in 2011 when Danaher started teaching a morning class at the academy. Eddie Cummings, a new student who liked Danaher’s approach to Brazilian jiu-jitsu, began attending every session. Over time, a group coalesced around a leglock system Danaher had designed. The name “Danaher Death Squad” came from former member Ryan Quinn; it stuck throughout the BJJ world, though Danaher himself hated it.

In December 2020, DDS left the Renzo Gracie Academy to become an independent gym. They opened a training facility on an island in Puerto Rico, hoping to bypass COVID-19 lockdown restrictions and attract athletes with a tropical setting. The project fell apart after a few months, largely because the pandemic made travel difficult. In July 2021, Gordon Ryan announced on Instagram he was moving to Austin, Texas, to start a new gym. Danaher then posted that DDS was splitting up. Reports said conflicts had arisen in Puerto Rico over training philosophies and the gym’s failure. After meeting, the team agreed to go separate ways.

Two new teams formed in Austin, Texas, less than a 15-minute drive apart. Danaher, Ryan, and Garry Tonon created New Wave Jiu Jitsu, while Craig Jones and Nick Rodriguez started B Team Jiu Jitsu. In October 2024, Ryan said on Jake Shields’ podcast that he blamed Jones for DDS’s collapse. Jones responded that Danaher and Ryan had overworked and abused athletes, causing members to leave.

DDS was known for an aggressive, submission-focused style that drew a large audience. Danaher’s philosophy emphasized constant offense with a progressive attack model—complete control and immobilization before finishing. Half of the team’s submissions came from a bottom position, and 73% of those were lower-limb attacks like leglocks. The squad released over fifty instructional DVDs.

Notable members included John Danaher, Gordon Ryan, Garry Tonon, Eddie Cummings, Craig Jones, Nick Rodriguez, and Ryan Quinn.

field
Submission grappling / Brazilian jiu-jitsu
nationality
American
known_for
Leglock system, ADCC success, offense-based grappling
founded
2011
split
2021

Lore & Background

DDS was established in 2011 when John Danaher took over a morning class at Renzo Gracie Academy. Eddie Cummings, a new student, attended all of Danaher's classes and helped form the core of a team that would use a leglock system devised by Danaher. Former member Ryan Quinn coined the name 'Danaher Death Squad', which became widely used in the BJJ world, though Danaher himself despised it.

In December 2020, DDS split from Renzo Gracie Academy to become an independent gym, opening a training facility on an island in Puerto Rico to avoid COVID-19 lockdown restrictions. The project was scrapped after a few months due to travel difficulties caused by the pandemic. In July 2021, Gordon Ryan announced on Instagram that he was moving to Austin, Texas to start a new gym, and Danaher confirmed DDS was parting ways. Conflicts among members—including differences in training philosophies and the failure of the Puerto Rico gym—led to the decision to go separate ways.

Two new teams formed from DDS in Austin, Texas: New Wave Jiu Jitsu (with Danaher, Ryan, and Garry Tonon) and B Team Jiu Jitsu (with Craig Jones and Nick Rodriguez). In October 2024, Ryan blamed Jones for the demise of DDS on a podcast; Jones responded that Danaher and Ryan had overworked and abused athletes, causing members to leave.

Reader's Guide

Danaher Death Squad's significance lies in its systematic, offense-based approach to submission grappling, particularly its emphasis on leglocks. The team's style—constantly on the offensive with a progressive attacking model—gathered a large audience and influenced modern no-gi jiu-jitsu. According to the article, 50% of the team's submissions came from a bottom playing stance, with 73% of those being lower limb submissions such as leglocks. DDS issued more than fifty DVD instructionals, spreading its methods widely. The team's split in 2021, amid reported conflicts and differing philosophies, led to the formation of two rival gyms in Austin, Texas—New Wave Jiu Jitsu and B Team Jiu Jitsu—which continue to shape the sport. The legacy of DDS includes both its technical innovations and the internal disputes that ultimately dissolved the team.

Did You Know?

Origins & Formation

DDS emerged in 2011 when John Danaher began leading a morning class at the Renzo Gracie Academy. Eddie Cummings, a newcomer to the school, gravitated toward Danaher's distinctive approach to Brazilian jiu-jitsu and made a habit of attending every one of those early sessions. From that small gathering of dedicated students, a team gradually coalesced around a leglock-centric system that Danaher had developed. Additional grapplers joined over time, and the group's identity solidified. The moniker "Danaher Death Squad" was actually coined by former member Ryan Quinn, and it stuck so firmly in the broader BJJ community that it became the team's de facto label. Ironically, Danaher himself has expressed strong dislike for the name, preferring something less theatrical. Despite the branding friction, the squad quickly built a reputation for aggressive, leglock-heavy competition grappling, earning recognition at elite events such as the ADCC Submission Fighting World Championship.

Grappling Philosophy & Style

At the core of DDS's identity was a commitment to offense-driven, submission-focused grappling that captivated a wide audience of practitioners and fans alike. Danaher's instructional philosophy emphasized a progressive attacking model: rather than throwing techniques randomly, a competitor should first achieve complete control and immobilization of the opponent before transitioning to a finishing submission. This methodical yet aggressive framework produced remarkable statistical results. Roughly half of the team's successful submissions came from a bottom-playing position, and of those, a striking 73 percent were lower-limb attacks, underscoring the squad's signature leglock emphasis. The team's competitive pedigree was further cemented by strong showings at the ADCC Submission Fighting World Championship, one of grappling's most prestigious events. Beyond the mat, DDS expanded its educational footprint by releasing more than fifty DVD instructionals, disseminating Danaher's systematic approach to a global audience of BJJ students.

The Puerto Rico Experiment & Fracture

In December 2020, DDS made a bold strategic move by severing ties with the Renzo Gracie Academy and launching an independent training facility on a Puerto Rican island. The tropical setting was intended to draw athletes from around the world, while the island's relative isolation offered a workaround to pandemic-related lockdown restrictions. However, the venture proved short-lived. The ongoing COVID-19 crisis made travel to the island impractical for most, and the gym was abandoned after only a few months. Compounding the difficulties were internal tensions among team members, including disagreements over training philosophies and the stress of the failed relocation. By July 2021, Gordon Ryan publicly announced on Instagram that he was relocating to Austin, Texas to open his own gym. Danaher followed with his own post confirming that DDS was officially dissolving. After a collective meeting, the group agreed that parting ways was the healthiest path forward for everyone involved.

Legacy & Aftermath

The dissolution of DDS did not erase its influence on the grappling world; instead, it spawned two new Austin-based teams that continued to shape the sport. Danaher, Ryan, and Garry Tonon came together to found New Wave Jiu Jitsu, while Craig Jones and Nick Rodriguez established B Team Jiu Jitsu. Remarkably, the two schools sit less than a fifteen-minute drive from each other, creating a small but intense competitive ecosystem in Texas. The post-DDS era has not been without friction. In October 2024, Ryan appeared on Jake Shields' podcast and placed significant blame for the team's collapse on Jones. Jones pushed back, arguing that both Danaher and Ryan had been overworking and mistreating athletes, which drove members away. These public exchanges highlight how the legacy of DDS remains a live, contested narrative within the BJJ community, even as the team's leglock-centric philosophy and competitive standards continue to influence a new generation of grapplers.

Frequently Asked Questions

What is the Danaher Death Squad?

The Danaher Death Squad was an American submission-grappling group built around a specialized leglock curriculum. It trained out of the Renzo Gracie Academy in California before ultimately breaking apart in 2021.

Who founded the Danaher Death Squad and when did it form?

John Danaher launched the squad in 2011 after he began running a morning class at the Renzo Gracie Academy. A small circle of students, including Eddie Cummings, gravitated toward his offensive leglock system, and that core group grew into a recognizable team.

What made the Danaher Death Squad famous in grappling?

The squad became well known for its aggressive, offense-first approach centered on a structured leglock system. It also collected a string of high-profile victories at the ADCC Submission Fighting World Championship, which cemented its reputation in the sport.

How did the Danaher Death Squad split?

The team fractured in 2021, bringing an end to its run as a unified group. The split closed out a period during which the squad had been one of the most discussed names in American submission grappling.

How did the Danaher Death Squad come together at Renzo Gracie Academy?

It started when Danaher took over a morning session and a handful of students, drawn to his methodical leglock drilling, began showing up to every class. Over time that small, dedicated circle solidified into a team with its own identity and a competitive record to back it up.

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