BRYAN BROWN "COACH B. BROWN" is a black belt under 10th Planet founder Eddie Bravo, and has been training with Eddie since 2006! He started at the Bomb Squad when it was the only 10th Planet, which now has over 80 Moons orbiting around the 10th Planet HQ in Los Angeles. One of Bryan's goals has been to become the head instructor of his own Moon. His heart lies in creating the best atmosphere, training partners, and best instruction in our community. 

In 2017 he married the love of his life, Mattie Brown. Outside of his life of jiu jitsu, Coach Bryan has quite the musical talent. 

MATTIE BROWN "THE HONEY BADGER" started training jiu jitsu in September 2011 and fell in love with it the first day. She is a brown belt under Coach Bryan Brown at 10th Planet Jiu Jitsu Jacksonville. Mattie's attention to detail has made her a great asset to the team, especially as the instructor for the 101 jiu jitsu classes. 

Her love for jiu jitsu is only surpassed by her love for empowering women through self defense. She runs our women's self defense program known as Athena: Women's Self Defense.

*Photo credit: Jesse Brantman

STORM SHANNON  "STORM" is  also one of our head kid's instructors and teaches our leg lock class. At 8 years old, Storm, influenced by the classic movie Karate Kid, began his marital arts career. He spent 10 years studying the art of Goju-ryu Karate. In 2008, Storm was introduced to the art of Brazilian jiu jitsu. Humbled by his experience, he was immediately hooked. The following year he was introduced to 10th Planet Jiu Jitsu, but didn't get the opportunity to train in it until Bryan Brown brought 10th Planet to Jacksonville. Beyond his jiu jitsu endeavors, Storm has received a degree in Sports Medicine Athletic Training and a doctorate in Chiropractic. Storm received his purple belt in 2017 from Coach Bryan Brown.

STEVEN KOSLOW "THE PILLOW" is a jiu jitsu brown belt under Bryan Brown and the Combat Night 125 champion (10 -1 amateur, 2-0 pro). Koslow is one of our jiu jitsu coaches and is head coach of the MMA program. He is known for his amazing work ethic and skills in striking and on the ground. Steven is both humble and humbling to anyone who spars with him. Always striving to better himself, and those around him, we are grateful to have Steven on our team.

SAM BARBOSA  Sam is our Greco-Roman adult and kids wrestling coach, a jiu jitsu purple belt under Coach Bryan Brown, and has his wrestling USA coaching card. Sam began wrestling at age 14 and continued through all of highschool. His last 3 years of highschool he wrestled under the supervision of Tony Ramos and Joe Sheffield, who had competed and coached for the marine corps wrestling team. Sam consistently demonstrates that he is up for any challenge. In 2018, he competed in the ADCC trials. His goal to win ADCC in 2021. Sam currently holds an amateur MMA record of 3-3.

Sam one day hopes to open a gym and be pillar in his community for his family. He has a big heart for all children, special needs children in particular. For a year Sam helped run a special Olympics weight lifting team and for 8 years, was a member, then a volunteer for Hoops N’ Dreams (an after school basketball program that allows for able bodied and disabled kids to interact).

Steven Koslow

"The Pillow"

(Pro) 2-0 | 125/135 lb

Shelby Koran

"Korn Star"

(Ammy) 6-0 | 115 lb

Michael Clark

"The Machine"

(Ammy) 4-4 | 170 lb

Samuel Barbosa


(Ammy) 3-3 | 185 lb

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10th Planet Jiu Jitsu Jacksonville

4849 Dawin Rd #2 Jacksonville FL 32207

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jiu jitsu . muay thai . self defense . mma . cardio kickboxing . wrestling . yoga . judo . fitness