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About Grey Wolf Brazilian Jiu-Jitsu

Head Instructor & Owner
Michael Yi
Instructor Michael Yi

Michael Yi is a Black Belt in Brazilian Jiu-Jitsu under Professor Renato “Babalu” Sobral. I started my Martial Arts journey while in High School. First starting with Tae Kwon Do for several years, then moving to Kenpo Karate for a few years afterward, and then moving back to Tae Kwon Do again. I have always enjoyed Martial Arts, and was looking for something more challenging and more fulfilling. I started my Brazilian Jiu-Jitsu training at Babalu’s Iron Gym (formerly Gracie Barra Cerritos) in 2009 and found the Martial Arts program that I have been looking for, and have been training under 3rd Degree BJJ Black Belt Renato “Babalu” Sobral ever since.

When my children were of age, I enrolled them in the kids’ programs at Babalu’s Iron Gym (B.I.G.) and they were both hooked. I wanted to get more involved with the academy and with my children’s growth and was given the opportunity to assist the instructors with the children’s Brazilian Jiu-Jitsu program.

Under the guidance of Professor Babalu, I gained valuable teaching experience, the Brazilian Jiu-Jitsu program methodology and given the responsibility of fully instructing one of the children’s BJJ class, and later the Adult BJJ Fundamental classes in 2014. During this time, the desire to teach others and share this art changed my life in many ways.

I’ve spent the following years understanding the details of the techniques, the growth of the students, the victories in competitions.

With encouragement and support from Professor Babalu, I was able to realize my dream of opening a Martial Arts school in 2018 here in Eugene, Oregon. My family and I love the family atmosphere and community here in the Bethel area, including Eugene Rec Center at “The Barn” on Royal Ave.

At Babalu’s Iron Gym’s 10th Anniversary Celebration (October 2018), I was awarded my BJJ Black Belt from Professor Babalu and became his 2nd student to receive a Black Belt.

With continual guidance and support from Professor Babalu and my family at Babalu’s Iron Gym, I am continuing this journey and I invite you to join this journey, to better ourselves and our community together.

IBJJF Black Belt Certificate
IBJJF BJJ Black Belt Certificate

USBJJF Black Belt Certificate
USBJJF BJJ Black Belt Certificate
Brazilian Jiu-Jitsu Lineage:

Our Brazilian Jiu-Jitsu Lineage is very close to the original Gracie/Brazilian Jiu-Jitsu source leading up to Grand Master Carlos Gracie Sr.


Carlos Gracie, Sr. → Carlos Gracie, Jr. → Renato “Babalu” Sobral [1st, 2nd & 3rd Degree by Prof. Roberto “Gordo” Correa] → Michael Yi


Grand Master Carlos Gracie Sr, one of the original founders of Brazilian Jiu-Jitsu, developed from Japanese Jiu-Jitsu through Mitsuyo Maeda.

Master Carlos Gracie Jr, the founder of IBJJF and Gracie Barra.

Prof. Roberto “Gordo” Correa, the professor to many BJJ Champions, also known as the inventor and developer of the Half-Guard.

Prof. Renato “Babalu” Sobral, UFC No. 1 Contender, Strikeforce Champion, International Fighting Championships Light Heavyweight Tournament Winner.

Brazilian Jiu-Jitsu Lineage
Brazilian Jiu-Jitsu Lineage
Accomplishments:

Vulkan California Open Gi Silver – 2014
Vulkan California Open No-Gi Silver – 2014
Dream Jiu-Jitsu No-Gi Silver – 2014
USBJJF North American Gi Champion – 2013
USBJJF North American Gi Bronze (Absolute) – 2013

USBJJF North American Championship
USBJJF North American Championship
Dream Jiu-Jitsu Championship
Dream Jiu-Jitsu Championship
Vulkan California Open Jiu Jitsu Tournament
Vulkan California Open Jiu Jitsu Tournament
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