CSA Instructors

Kirian Fitzgibbons - Head Coach

kirian thailandKirian brings over 20 years of real world operations and teaching skills to his students. As a former member of two (2) Presidential Protection Units and a US State Department Sub Contractor, Kirian is a certified Defensive Tactics Instructor, Defensive/Evasive Driving Instructor, Firearms Instructor, and recognized Expert Witness in security related matters including; Dignitary/Executive Protection, Security Operations, and Defensive Tactics providing consulting and training to Government Organizations, Military Units, Law Enforcement and Corporate clients around the globe.

Kirian is a highly sought after Personal Safety Expert and Krav Maga instructor who has contributed to and been featured in the books “Complete Krav Maga” and “Krav Maga for Beginners”, numerous newspapers and magazines including; Esquire, US News and World Report, Forbes, Security Management, the Wall Street Journal, the UK’s Financial Times, SWAT and Combat Handguns. Kirian has also been featured on multiple television shows, including; "Fox News", the History Channel's "Tactical to Practical" and "Human Weapon".  Kirian is also certified as an instructor with Tony Blauer’s PDR/Spear System, CDT, and Paul Vunak's PFS/JKD. Kirian is a certified CrossFit Coach and is the only certified coach for Miletich Fighting Systems (MFS) in Northern California.

Kirian has multiple certifications in Muay Thai and is one of the few U.S. instructors certified by the world renowned Fairtex Muay Thai Camp.  Kirian received his “Kru” certification from The Muay Thai International Association (MTIA) under Grand Master Thosaphon Sitawatjana (Master Toddy), recognized by the World Muay Thai Council (WMC) and the government of Thailand.  Kirian is a former I.K.K.C US Kickboxing Champion and has been involved in training multiple World Champion fighters in all areas of Combat Sports from Boxing, to Thai boxing and MMA.

In 2008, Kirian was selected as the Head Coach of the U.S. National Muay Team that competed at the World Championships in Busan, South Korea and in 2009 he led the US Team to an all time best performance during the World Championships in Bangkok, Thailand, including  7 medals (2 Gold and 5 Bronze). Kirian was also asked to provide expert color commentary during the prestigious Kings Cup/WMC Championships which was televised on ESPN.


Kevin Ross - Muaythai

kevinbioCSA is honored to have the one and only Kevin “The Soul Assassin” Ross as a member of our Fight Team and Senior Coach. Kevin is considered by many to be the best pound for pound American Male Muaythai fighter of all time.

Kevin began training in Muaythai in 2003 under famous trainer Master Toddy. He has also trained in Thailand numerous times to include training at Sitsonpeenong and Sitmonchai gyms in Thailand. Kevin has earned himself a reputation for being willing to fight anyone, anywhere, choosing to pit himself against the very best competitors in the world and managing to hold a stellar record of 38 wins, 12 of them coming by (T)KO, and only 9 losses. He is currently ranked 10th in the world by the WBC for Muaythai in the Super-Lightweight Division (140 lbs, 63.503 kg). Among Kevin’s titles is the Super Light Weight (140 pounds) WBC International championship Title, the Welterweight (147 pounds) WBC USA National championship Title, the FIDAM Welterweight championship of Mexico and the United States Muay Thai Federation (USMF) Welterweight champion. Kevin was also a semi finalist in the 2010 Toyota Cup 8-man Tournament in Thailand and has fought such notable Thais as Saenchai, Sagetdao, Sitisak, Coke and Malaipet. In December 2010 Ross was Voted Muaythai North American Fighter of the year.

CSA is proud to have Kevin Ross as part of our staff, our team and our family.


Julio Villarreal - Krav Maga

julio_actionJulio first began training in Krav Maga in 2006, and has diligently applied himself in deepening his knowledge and technical ability first as a student and then as an instructor ever since. Although he also possesses extensive training in Muaythai, Julio's first love was Krav Maga, and his passion for the system, athletic aptitude, and investment in his students' progress is evident in every class he teaches.

Julio is a gold certified (the highest ranking possible on a certification) Level 3 instructor with the Krav Maga Alliance, a certified CDT instructor, and has also completed the Crossfit Defense course. By day, Julio is a Social Work Clinician pursuing his Master's Degree in Social Work, allowing him to balance a nurturing personality with a predilection for viciously beating up bad guys.








Katie Toliao-Hurd - Krav Maga

katiebioKatie began her Krav Maga journey in 2007, and fell in love with the practicality, intensity, and brutality of the system. She later added competition in Muaythai to her training in 2008, and went on to win a spot on the U.S. National Muaythai team, competing at the Muaythai World Championships in Bangkok, Thailand in 2009.

Katie held the US National Title with the MTAA at 135 pounds, winning her belt by TKO. Katie is a gold certified Level 3 instructor with the Krav Maga Alliance and has also completed the Crossfit Defense course with renowned trainer Tony Blauer. In her spare time, Katie enjoys baking, historical fiction, snuggling her dog, powerlifting, and punching people in the face.







Val Ignatov - Sambo

valbioCSA is proud to have UFC veteran and elite Sambo Champion and instructor, Val Ignatov, as our Sambo coach. Val is a six time National Champion in Sambo, winning the coveted title of "Most Resultful Contestant" for three of those championships in consecutive years. He has earned three bronze medals and is a two time silver medalist for both European and International Championships.

Val's breadth of knowledge and academic approach to submissions, along with Sambo's inherent practicality for MMA, make him a highly sought-after coach within the Cesar Gracie Fight team. Although he corners such illustrious names as Nick and Nate Diaz, Val loves teaching Sambo to students of all experience levels and goals.









Matheus Andre - Brazilian jiu-jitsu

matheusbioMatheus began training in Brazilian Jiu-Jits at the age of twelve. He moved to the U.S. in 2008 to train under Cesar Gracie and was awarded his black belt shortly after. Matheus is a fierce competitor, with a long list of accolades including multiple first place standings in state and world championships, and a coveted first place at NAGA for both gi and no gi. He spent the last two years as the head coach at Gracie Fighter Tampa, working with and helping to train former WWE champion and current Cesar Gracie MMA Fighter, Dave Batista.

Matheus is passionate about the benefits of Brazilian Jiu-Jitsu, both in competition and for personal growth. His attentiveness, intense investment in his students' progress, and avid interest in both sport Jiu-Jitsu and grappling for MMA make him an incredible instructor.

CSA is proud to have him on our staff and as a member of our family.



Jessica Fitzgibbons - CrossFit

jessica_cf_gamesJessica is a lifelong athlete, who started out as a competitive ice skater as a child. As an adult, Jessica has played competitive Ice/Roller Hockey and has won multiple US National Titles. Jessica has been involved in the Martial Arts for years having studied Escrima, Krav Maga, Boxing and Muaythai. Jessica is a certified Krav Maga Instructor with the Krav Maga Alliance, certified Boxing Coach with USA Boxing and is undefeated as a Muaythai Fighter. Jessica is also an avid CrossFitter who has competed in multiple CrossFit competitions including the 2011 Reebok CrossFit Games (Nor-Cal Regionals).











Jessica is one of our Head Instructors for our Kids MMA Program and our Adult CrossFit Program. Jessica holds multiple CrossFit and Strength Certifications including:

  • USA Weightlifting (USAW): Sports Performance Coach Level 1
  • Starting Strength Trainers Certification (Mark Rippetoe)
  • CrossFit Level 1 Trainers Certification
  • CrossFit Level 2 Coaches Prep Course
  • CrossFit Olympic Lifting Trainers Certification
  • CrossFit Power Lifting Trainers Certification
  • CrossFit Football Trainers Certification
  • CrossFit Endurance Trainers Certification
  • CrossFit Mobility Trainers Certification  


Jackie Perez - CrossFit

jackie_1CSA is proud to have Jackie Perez as one of our lead CrossFit instructors. Growing up, Jackie played every sport she could. In high school she played volleyball, soccer and softball. In Junior College she focused on volleyball and continued playing volleyball at Cal State Hayward. While attending Cal-State Hayward Jackie obtained her BS in Kinesiology. Upon graduation, Jackie began her career in Fitness and Personal Training where she pursued and received multiple certifications. While she was incredibly successful in the traditional fitness and personal training industry, Jackie missed the competitive nature of team sports until she found CrossFit.

Jackie is a fantastic CrossFit Coach and a fierce Competitor having competed in the 2010 and 2011 Reebok CrossFit Games, both years she advanced to Regionals where she finished in the Top 20. She has also competed in many other CrossFit competitions like "FemmeFit" finishing in the Top 10. 










Jackie brings a wealth of Fitness, Personal Training and CrossFit Coaching Expierance to the CSA Team including:

  • BS Kinesiology (Cal-State Hayward)
  • NASM CPT (Certified Personal Trainer)
  • NESTA PFT (Personal Fitness Trainer)
  • 24 Hour Fitness (Master Trainer)
  • CrossFit Level 1 Trainers Certification
  • CrossFit Olympic Lifting Trainers Certification
  • CrossFit Football Trainers Certification


Jenna Castillo - Muaythai & CrossFit


CSA is proud to welcome World Champion Muaythai fighter, StrikeForce Veteran an elite CrossFit Coach Jenna Castillo to our Team. Jenna began studying traditional Shotokan Karate at the age of nine, earning her black belt through the Japanese Karate Association.  While still in high school, Jenna decided she wanted to go into fighting.  Through a chance encounter, she met Cung Le and began training in San Shou (Chinese Kickboxing).  In San Shou, she won multiple titles in two weight classes.  Jenna then moved to Fairtex to train in Muaythai and won Multiple World Titles. Jenna now competes in Mixed Martial Arts, having won her pro debut at StrikeForce via 2nd round KO. Jenna is also very involved in the fitness industry and has been teaching CrossFit for years.

Jenna is also very involved in the fitness industry and has been teaching CrossFit for years and loves the intensity she finds there. As such, she competed in the 2009 CrossFit Games and she is also one of the very few Female CrossFit- Level 2 Certified Instructors.

We are very fortunate to have Jenna teaching Muaythai and CrossFit at CSA!