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Meet the Crew

Andy Jamrog
Owner & Trainer

CEO/Operations & Promotions

Andy is the co-owner and founder of Xtreme MMA, LLC - an urban style gym and fitness studio located in Holland, MI. He is a Michigan born competitive athlete, winning Judo fighter and personal trainer. Andy is admittedly passionate about health, fitness and cage fighting.
Andy inspires members to focus - allowing them to hit their mark. His motto..."if you want to be a champion, you have to train like one!"

Promoters - please contact Andy for all promotional questions and assistance. Here at Xtreme MMA, Andy handles all operational and promotions activity.

His qualifications include:

  • 18+ years health and fitness experience
  • 5+ years of Judo winning competition
  • 6 years teaching the art of Judo
  • Extensive self defense & defensive tactics training
  • Muay Thai , Tae Kwon Do, Jiu Jitsu & Boxing
  • Wellness leader and educator

Contact Andy @ 616.886.1465, or by email @

Gery Weichman
Owner & Trainer

Master Tae Kwon Do Instructor

Gery (co-owner and founder) is currently a 5th degree Tae Kwon Do black belt and is in the Black Belt Hall of Fame. He is a winning TKD competitor, seasoned instructor and personal trainer. Gery's passion for mixed martial arts has expanded his role to being a specialized fitness/strength training and MMA fight instructor. He has worked as an MMA fight instructor for over three years and combines his knowledge in the arts with his co-partner to bring a well-rounded, unique training program.

Through this, he has become good personal friends with Dan "the Beast" Severn and several other martial artists. Gery loves the aspect of respect and the discipline that goes with the art.

  • 20 years health and fitness experience
  • 5th Degree Black Belt in Tae Kwon Do
  • 15+ years teaching the art of Tae Kwon Do
  • 5+ years TDK Competitive fighting
  • Extensive self defense & defensive tactics training

Contact Gery by email @

Kevin Irwin - Jiu Jitsu & Submission Grappling Trainer (Youth & Adult)

Erick Lozano - MMA Trainer/Pro Fighter

Ryan Lancaster - Wrestling Trainer

Khru Ray White - Muay Thai Trainer

David Vargas - Chi Do Kwan Karate Trainer

How to Reach Us

Xtreme MMA, LLC
4294 Blue Star Hwy
Holland, MI 49423

Ph: 616.396.7130


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