The Academy

Gallery

Inside the room - training, competition, belt promotions, and academy life at Sumo's Family Jiu Jitsu in Foster City.

Ribbon cutting outside the academy on opening day
Cutting the ribbon
Ribbon cut at the grand opening
Ribbon cut. We’re open.
Guests and students lined up for the ceremony
Mayor Art Kiesel and the Chamber, with our students up front
Grand opening crowd with the fire crew and their engine
The fire crew stopped by
Kids class lined up with their instructors
Game faces
Kids class goofing around with their instructors
...and the take two
Kids pulling the rope in a Lil’ Sumos class
First class, first tug of war
Two black belts rolling on the mat
Black belts rolling
Sumo with friends outside the academy on opening day
Good people, good day
A group of students and instructors on the mat
One of the groups that rolled through
Matt 'Sumo' Shriner outside Sumo's Family Jiu Jitsu, Foster City
Sumo's Family Jiu Jitsu - Foster City
Kids jiu jitsu class drilling stance and movement at Sumo's Family Jiu Jitsu, Foster City
Kids class - stance & movement
Kids class running drills across the mats with instructor watching
Kids class drilling
Two students rolling on the mats while an instructor watches at Sumo's Family Jiu Jitsu
Rolling on the mats
Two young students working guard on the mat at Sumo's Family Jiu Jitsu
Kids class - working the guard
Drilling the entry
Koffee Krew open mat group photo in the park
Koffee Krew open mat in the park
Jiu-Jitsu Con seminar group
Jiu-Jitsu Con - seminar group
Ronald Junior, The Human Highlight Reel
Sumo & Ronald Junior, The Human Highlight Reel
Koffee Krew August 2026 group photo in the park
Koffee Krew in the park, August 2026
Golden State Classic - podium with coach
Golden State Classic - gold with coach Raf
Team with medals after competition
Medal haul with the crew
Worlds - On the floor
Worlds - On the floor
Two instructors seated outside Sumo's Family Jiu Jitsu
Out front
Students cleaning and mopping the mats after training
Mats down, mats clean
Team gathering - food and friends
Team gathering - good food, good crew
Kids and adults training together with the rope at Sumo's Family Jiu Jitsu, Foster City
Kids and adults on the mat together
Matt 'Sumo' Shriner on the podium at the IBJJF Sacramento Winter International Open 2026
IBJJF Sacramento Winter Open 2026 - Gold
Rafael Fidelis competing - mount control
Raf competing - IBJJF
Kids Jiu Jitsu World League podium
Jiu Jitsu World League Competition
Kid getting hand raised at Jiu Jitsu World League
Jiu Jitsu World League Competition
Kids after their match at Jiu Jitsu World League
Jiu Jitsu World League Competition
Marco Nascimento gi - Custom build
Marco Nascimento gi - Custom build
Sumo Competing
Sumo Competing
Rafael Fidelis competing
Raf Competing
World Master 2025 - Champion
World Master 2025 - Champion
World Master 2025 - Final, 4–0
World Master 2025 - Final, 4–0
World Master 2024 - Champion
World Master 2024 - Champion
World Master 2024 - Gold medal
World Master 2024 - Gold medal
World Master 2024 - Gold & silver
World Master 2024 - Gold & silver
World Master 2018 - Podium
World Master 2018 - Podium
World Master 2018 - Gold & silver
World Master 2018 - Gold & silver
ACAI Super Bro - Victory
ACAI Super Bro - Victory
World Master 2023 - Podium
World Master 2023 - Podium
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