I've been training with Coach Jannsen for a while now, and what stands out most is how meticulous he is. He's constantly correcting small things, like snapping a hook straight back to your face instead of letting it swing wide, or holding your position after a combo instead of giving back the ground you just earned. That level of detail isn't him going through the motions, it's proof he actually cares whether you improve. The conditioning rounds are brutal but they've built real endurance and kept my technique from falling apart when I'm tired. Even when I train at other gyms or take a random fitness class, his corrections are still running in the back of my mind. More than one trainer elsewhere has asked why my footwork is so careful and my defense so tight. That's Jannsen's training showing up when I'm not even at his gym. I've worked with him for years now, even outside of fight training he's a good friend and is always a great guy to have around. read more

I wanted to add to this review. I still stand by my 5 star rating. I typically do the full contact stand up classes on Mondays and Wednesdays. We are now also learning take down techniques in the stand up classes. We have been getting an influx of new folks and now "regulars" into the classes. The vibe is great and there is always somebody you can pair up with. There are a lot of fun games too when we do technique sparring. The coaching staff is outstanding ! read more

Coach Jansen has been with me since I was 12 years old, and from the very beginning he inspired me not just to train, but to grow. He taught me how to truly understand martial arts.. the fundamentals, the discipline, the mindset, and the respect behind every technique. No matter what level you're at, Jansen meets you where you are and brings out the best in you. He's a true professional and an even better mentor. His passion, patience, and consistency are rare, and it shows in every student he coaches. Now as a grown man and a father, I honestly can't wait for my sons to be old enough so I can bring them to him. That's how much trust and respect I have for him as a teacher and as a man. Thank you, Jansen, for everything you've poured into me over the years. You've been my first and only true coach, and I'm proud and honored to be under your guidance. read more

Great group of guys with a team mentality. Class sizes are small, so you get plenty of individual attention. The coaches are highly knowledgeable, and each class builds on the last, so you learn practical chains and combos instead of just random techniques. Coach Jansenn has a ton of experience and a great teaching style. I've improved a lot since training here, but like anything, you get what you put in. The environment is supportive and safe. Everyone wants to help you get better, not hurt you. Highly recommend Coach Jansenn's school if you're looking to get into the sport. read more

Very good gym, i had 1 year of prior juijtisu and muay thai experience and i learned alot ever since i started coming here, Coaches are amazing aswell read more

Great MMA gym. You can take ground and stand up separately. Amazing coaching staff with in a convenient location.

I've gone to underground MMA for about a year and a half now, so here's the rundown. Costs: First major hurdles that you can encounter when starting mma is costs, as far as here it is the best of both worlds, for both quality and cost. Compared to other gyms this place is extremely cheap and the coaching is phenomenal. All mma gyms are going to be more than your regular weight gym but believe me this place is worth it and more. Training: classes are Monday through Friday evenings with morning classes Tuesday and Saturday. Each class has a bit of instruction with time to spar or drill at the end to hone your skills. Head coach Jannsen is a master of his craft as far as coaching and is always helpful with refining your style. Coach Jon is an exceptional and experienced fighter with professional bouts to boot, he is an incredible sparring partner and always helps you to get better. Coach Lucas is a warrior amongst men and has an amazing style that inspires you to want to get better. Each of them are incredibly kind as well as skilled, and I personally cannot ask for a better set of trainers. Community: for me the atmosphere of a gym is one of the most important factors when deciding a gym. It is incredibly gratifying that shamrock (underground) mma has fostered a community of caring and passionate fighters. All of the people you meet are wonderful and kind that will provide smiles, laughs, and good sparring. Whether you are training for fun, self defense, or to try your luck on the mma road, this gym has everything you need and more. Proud to be underground mma! TLDR: go to this gym trainings great, coaches are great, people are great. Plus it's cheap. First class is free try it out. read more

If you want quality technique in all things MMA, This is the place to see. I've spent some time there. They have a welcoming attitude, clean mats, ring and cage. Their knowledge is second to none. Highly recommend checking this place out. You could learn a lot without any pressure of some of the other gyms, who are actually technically inferior. read more

I've been trained in boxing by Jannsen with Shamrock for several years, and it's been the best sports training experience I've ever been involved with (I'm a multi-sport athlete in my 50s). His boxing experience, background and patience has been invaluable to me in this complete body workout. Highly recommend! read more

Been training here for over 3 years. No frills and that's what I like. No-Gi ground classes and standup classes - simple. Coaches who have competed at the professional level and semi-professional level. You get out of it what you put in. This gym offers exactly what you need to learn and excel - all that is needed is for you to put in your effort and drive. I'll see you there. read more

I have been going to the gym for almost 2 years now and it is a great place to train. Awesome coaches, friendly people, individual attention, cleanliness make it the best gym I have trained at. There is great emphasis on technique be it boxing/mma/kickboxing/muay thai which has helped me better my form and technique. Highly recommend. read more

I've been training here for more than half a year and I absolutely recommend this gym if you are trying to take your combat skills and fitness to the next level. The coaches are super passionate and give great lessons. The gym is also smaller and well kept. It doesn't smell! read more

I recently started going to Underground MMA in late April. I'm very happy to have found a gym where everyone around me is straight up cool. Not only are the coaches amazing at what they do, they're all genuine and super friendly people as well. They do watch parties during UFC fights, and even have exhibition matches amongst the students where your family and friends can come and watch. Definitely come by and check out the gym! read more

I've been training here for a little over a year and I've enjoyed training here from the beginning. The coaches are very knowledgeable and helpful in improving your skills. I also believe that this is a very good place for beginners that want to take their skill a bit further. read more

Been coming here since i was a kid, great environment, super clean, beginner friendly and you always feel like family walking in highly recommend it read more

I've been training here for just under a year now. In that time, I went from a beginner to now having competed multiple times. The coaches are amazing, and I feel I was allowed to progress very quickly. Originally, I started at AKA, but the gym was too big and received very little individual attention. If you want to learn how to fight/compete in MMA, come to Shamrock. read more

I have been training at Underground MMA for about three years. This gym has always had a welcoming and constructive environment. During my time here, I've built lifelong relationships while learning the effective, efficient, and well-rounded style of Shamrock MMA. I highly recommend this gym to anyone passionate about martial arts! read more

Five Stars automatically. Yes, I belong to this amazing school and group of individuals. I started my MMA stint almost 3 years ago with Under Ground-MMA, coming from a long line of sports, and some martial arts. Since joining Jannsen and the rest of my brothers and sisters. I have been more than humbled in the training and authenticity of true martial arts. We train truthfully and respectfully. Newer individuals (as myself), we always come with uncertainties of getting hurt, or "beat-up" for lack of better terms, but it it the complete opposite. Coach (Jannsen) is someone that keeps close attention to your abilities, and more important to your health and the higher ranking individuals always show respect when teaching or during drills. We definitely condition our bodies for strength and endurance. Some of are here more for the martial arts aspect, and some of are here more for the strength and conditioning aspect. Either way, you will have a good class, classes are different every-time, so if you're anything like me, and have the attention span of a gnat, and have hearing loss due to old age and being around loud sounds a good part of your life..... you'll fit right in and won't get distracted. Disciplines we train in... Submission Wrestling Kick-Boxing Boxing Judo. Muay Thai. Our facility is clean, super clean (we clean it after every class) New individuals are warmly welcome. We're just a great group of people who enjoy the arts, life and working towards our individual goals. Cheers all! JR Lopez read more

This is a family-owned and -operated martial arts fitness studio near Oakridge Mall (just down the street on Winfield Blvd.) Hubby has known and worked out with Jannsen for almost a decade. While the location has changed a couple times, the high quality instruction remains as solid as ever. These folks have a dedicated following for a reason. You won't be disappointed with the clean facilities and pro equipment. It's also known as Underground MMA, and the UFC fight nights are played on a big screen in the studio for their members. And there's usually plenty of parking available! Highly recommended for anyone wanting to improve their strength, coordination, endurance and confidence. read more

Shamrock MMA - Fully equipped for sparring and conditioning sessions. - Martial Arts Near Me - San Jose, California

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This is hands down the best MMA gym I've been to. The classes are small so you get a lot of attention and the teachers are very experienced. One teacher is going to be a pro fighter and another teacher was a pro fighter. They keep the gym very clean so I don't have to worry about getting infections or ringworm. One of the things this gym excels at over other gyms is the ability to combine ground fighting and standing fighting together. They split it up to help newer people like me learn but, they offer a lot of mixing to prevent bad habits. Most other gyms like AKA or LA boxing have separate classes that don't seem to mix very well. This is very good for people who understand the fundimentals. I would highly suggest trying the gym if you have been thinking about trying mma at all. They've been really helpful in making me a more well rounded martial artist. read more

I love coming here and training. Jansen and Jon have helped me learn so much since they opened this location. They are extremely good at helping you learn from the bottom up and take the time to teach you if your struggling with new techniques. You get an amazing workout, awesome training and get to hang out with some of the coolest people all while learning. It doesnt matter what level of fighter you are or even if you know nothing. Jansen and Jon will get you to reach your goals and train you! I knew nothing when I first went in and now I know so much! I'm learning more techniques every day I go to class. I highly recommend this place to anyone and everyone looking for MMA training, self defense and a great experience. read more