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Cache Valley’s Most Comprehensive Martial Arts Training Academy, Offering:

Boxing, Judo, Jiu-Jitsu, Karate, Sambo, Hapkido, Kickboxing, Bo-Ka-Jitsu, Chiroku Ryu, Mixed Martial Arts & Self defense

ALL Instructors Are Trained & Certified!

Offering more classes and training options than any other self-defense gym in Utah.


At Top Defense & Fitness, our instructors/coaches are either current fighters or former fighters. Some have been ranked nationally and internationally!

We are constantly offering new classes to our program. You can come in and train for health and self-defense, cardio, or to compete.

Imagine a sanctuary in the heart of Cache Valley where strength, skill, and confidence converge. Welcome to TDF Gym, a dojo/gym unlike any other in the region. We offer an unparalleled range of disciplines including Jiu-Jitsu, Judo, Karate, Boxing, Kickboxing, Hapkido, Bokajitsu and MMA, all integrated into a cohesive curriculum focused on practical self-defense. In a world that can often feel volatile and unpredictable, it’s never been more critical to have the knowledge and skills to protect yourself and your loved ones.

Why choose self-defense classes at TDF Gym? Here are the top five reasons. Firstly, you’ll gain practical skills that enhance your ability to protect yourself and your family. Secondly, our classes will boost your confidence as you face the world, knowing you can defend yourself if the need arises. Thirdly, our expert trainers will help you reach new levels of physical fitness, strength, and flexibility. Fourthly, you’ll form lasting bonds and friendships in our community of like-minded individuals, promoting a sense of camaraderie and mutual support. Lastly, engaging in these classes with family members serves as a unique and impactful bonding experience. Discover the social benefits of learning together, motivating one another, and growing stronger as a unit. Don’t wait for tomorrow; join us at TDF Gym today and empower yourself with martial arts skills that last a lifetime.


Rob Hunt (General Manager/Instructor & Competitor) 48 Years Experience 

Rob (Owner of TDF Gym) started his training at age 5 and competing at age 6 under his father, Gerald Hunt, who was a Golden Gloves Boxing Champ, Wrestler and Kempo Karate practitioner. He wrestled all through high school and 46 years later still competes in martial arts. His journey was further enriched by various masters in different martial arts disciplines, including “Old school TaeKwonDo” under Paul Dicks and Master Chong, Shorinji Kempo and Kyu Shin Ryu (Kempo) under Master Gary Conors, Bo-Ka-Jitsu Jitsu (a fusion of Boxing, Karate, Shotokan Karate, and Japanese Jujitsu) under Master Daniel T. Lee and Jon “Bangon Langon” (Master Lee has mentored Rob for over 39 years), lastly Chiryoku under Master Brent Undhjem who has coached seven world champion fighters.

Rob has trained in the following:

  • Bo-Ka-Jitsu 7th Degree Black Belt
  • Kyu Shin Ryu (Kempo) Black Belt
  • Chiryoku Karate Black Belt
  • Shorinji Kempo Green Belt
  • Japanese Jiu-Jitsu
  • Wrestling Folk, freestyle & Greco-Roman
  • Catch Wrestling
  • Shoot Fighting
  • MMA
  • Boxing (Certified Team USA)
  • Weapons

Other Accomplishments and Licenses:

  • Massad Ayoob Mag 20 Graduate (Scored 296 out of 300)
  • Licensed Cut Man/Second (Corner Man)
  • Safe Sport Certified
  • Team USA Boxing Instructor
  • cornered over 12 MMA fights
  • Trained numerous MMA fighters (one was in the top 10 knockouts of the year)

Isaac Nydegger (Instructor &  Competitor) 30 Years Experience

  • Krav Maga
  • Bo-Ka-Jitsu Brown Belt
  • MMA
  • Chiryoku-Ryu Brown Belt

Mr Pollert (Instructor) 9 Years Experience

  • Judo
  • Hapkido
  • Tae-Kwon-Do

Jonathan Semetko (Director of Programs/Instructor & Competitor) 39 Years Experience 

Jon is a lifelong martial arts student, beginning his studies at age 7; training Judo, Tae Kwon Do, and Hapkido at a number of dojo and wrestling as a youth. He achieved All State-Honorable Mention, in wrestling under the Michigan High School Athletic Association, in March of 2000. Jon has continued to train, coach, and compete in Martial Arts since that time.


  • 4th Degree Black Belt, USA Judo, JBBF (AAU Judo), and USJA.
  • 4th Degree Black Belt, Tae Kwon Do, Han Moo Kwan
  • 4th Degree Black Belt, Karate-do, under Robert Hunt
  • 3rd Degree Black Belt, Hapkido, Global Hapkido Association


  • -2021, year-end Ranked #1, USA Judo Veteran National Points Roster, M3 Heavyweight
  • -2022, year-end Ranked #1, USA Judo Veteran National Points Roster, M3 Heavyweight
  • -2x National Champion, M3 Heavyweight


  • -Certified International Level Coach, USA Judo
  • -Graduate, Renjuku Academy, Judo Coaching Course under Steve Scott
  • -Coached multiple USA Judo National Champions
  • -Multiple students qualified for and one student attend a continental Judo competition as a member of a Unites States Select Team.
  • -His youth and adult competitors earned 38 USA Judo National medals 2020-2023
  • -Cache Valley Judo Club finished in the top quartile in the Nation for total team points in 2021 and improved by 3 places for total team points in 2022.
  • -Certified P3, Police Judo Instructor


  • -President, Utah Judo Inc, State Association under USA Judo
  • -National US Board of Directors, Global Hapkido Association
  • -Director of Programs/ Head Coach TDF Gym

Tanner Spillman (Instructor & Competitor) 26 Years Experience 

  • BJJ
  • MMA
  • Bo-Ka-Jitsu Brown Belt
  • Strengthening & Conditioning
  • Muay Thai
  • Boxing (Team USA Certified)

Greg Nielsen (Instructor, Competitor)

  • Wrestling
  • Jiu-Jitsu
  • Bo-Ka-Jitsu Black Belt

Jordan Claridge (Instructor & Competitor) 19 Years Experience 

Jordan has been wrestling for a total of 10 years starting in youth wrestling when he was 7 years old. Jordan’s accomplishments as a wrestler were 4 time regional participant including a 2nd place finish and a 3rd place finish. Jordan also competed in the state tournament including a 6th place finish as a senior. Jordan also competed in freestyle and Greco Roman wrestling were he competed in the northwest regional tournament. Jordan also has experience in boxing, kick boxing, and jiu jitsu while also having a good knowledge of strength and conditioning and nutrition.

Jordan Trains In The Following:

  • Boxing (Team USA Certified)
  • MMA
  • Freestyle, Folk & Greco-Roman Wrestling
  • Bo-Ka-Jitsu Brown Belt
  • Strengthening & Conditioning

Sam Bingham (Instructor & Competitor) 10 Years Experience

  • Judo
  • Jiu-Jitsu
  • Hapkido

Josh Baird (Instructor & Competitor) 10 Years Experience

  • Wrestling
  • Jiu-Jitsu

Kort Smith (Instructor & Competitor) 20 Years Experience

  • Wrestling
  • Jiu-Jitsu
  • Bo-Ka-Jitsu Black Belt

We Sell The Following Brands At The Gym

Boxing in Cache Valley At Its Best! (USA Boxing Registered Club – registered as “TDF GYM”) 

We really do believe we have the best Boxing coaches in Cache Valley! For that matter, we believe we have the best boxing coaches you can find in the Rocky Mountain area, Come see for yourself!

Cache Valley/Logan Brazilian Jiu Jitsu At Its Best!

Take a look at our Cache Valley Jiu-Jitsu instructors Ismael Fagundes who is with the famed Alex Tchaka Brazillian Jiu-Jitsu Team. And Tony Kanski who teaches no-gi BJJ.  You may also want to take a look at our info page on Gracie Jiu-Jitsu, and learn a little about some of the Jiu-Jitsu history and  where it came from.

Cache Valley/Logan Martial Arts At Its Best!

We offer many different types of martial arts, come try them all and see which one of our instructors you like best)

Cache Valley/Logan Taekwondo At Its Best!

Take a look at our Taekwondo instructor Jonathan Semetko, you will agree that with him, we really do have the best of Logan Tae Kwon Do right here! With Mr. Semetko’s classes he focuses on traditional Taekwondo/Hapkido which is more combat oriented (not just sport)… Fun fact, we have shown two spellings for Taekwondo, here are two others: Taekwon Do, Taekwon-Do

Cache Valley Judo Club At Its Best! (USA Judo Registered Club – registered as “Cache Valley Judo Club”)

Take a look at our Judo instructor Jonathan Semetko, you will agree that with him, we really do have the best Logan Judo Club right here! With Mr. Semetko’s classes he focuses on Olympic Judo as well as Freestyle Judo. Be sure and visit the Cache Valley Judo Club fb page.

Cache Valley/Logan Hapkido At Its Best!

We have just added Hapkido to our gym! Check out when it is being taught.

We have some fun educational links below that cover the following martial arts (some of which we offer here, or soon will be)