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February 10, 2024

The event will be held under official SJJIF rules.

ISFA is one of the biggest organizers of Brazilian jiu-jitsu grappling events on the Balkans. We have organized events in Bulgaria, Greece and Macedonia. In addition, we organize professional and amateur MMA and Shootboxing events.

The SJJIF aims to organize the sport of Brazilian Jiu-Jitsu and its federations, establishing one common set of rules that will enable the sport.

Fighting styles: Grappling and BJJ

Online registration at smoothcomp.com is obligatory!

Fighters, that aren’t registered, will have to pay an additional 10€ fee

The eighth event organized by the Bulgarian Sport Jiu-Jitsu Federation, official representative of the Sport Jiu-Jitsu International Federation

The SJJIF aims to organize the sport of Brazilian Jiu-Jitsu and its federations, establishing one common set of rules that will enable the sport to develop into a recognized Olympic sport. The SJJIF is aware that Jiu-Jitsu is a constantly evolving sport and its rules & regulations will be updated accordingly to reflect the sport’s development.

Weight divisions for men adults, masters and juvenile (all skill levels and belts):

-62kg, -68kg, -74kg, -80kg, -86kg, -92kg, -98kg, +98kg, Absolute

Female divisions for Gi and No Gi:

-46kg, -51kg, -56kg, +56kg

More info on weight divisions and rules:




Athletes weigh in without a Gi.

Time limits for adult Beginners and Intermediates: 5 minutes

All masters divisions and kids time limit: 4 minutes

Advanced (purple, brown and black belts): 8 minutes

*all leg locks are allowed in the no-gi advanced division

Weight in: 9:00 am to 10am

On the spot registration – 35€

No refunds policy!

Hello friends,

We are ISFA, and we couldn’t be more excited to announce the upcoming ISFASubmission Challenge 2023, set to take place on December 16th! As the most regular organizer of grappling and Brazilian Jiu-Jitsu (BJJ) events in Bulgaria, we are thrilled to bring you a tournament that promises to be nothing short of extraordinary.

At ISFA, our mission is to promote and advance the world of combat sports, and the Sofia Open is a testament to that dedication. This event is a fusion of grappling no-gi, BJJ, MMA, and shootboxing, offering a dynamic and thrilling experience for both participants and spectators alike.

One of the core values that drives us at ISFA is inclusivity. We firmly believe that combat sports should be accessible to everyone, regardless of their skill level or background. That’s why the Sofia Open welcomes fighters from all walks of life, creating a warm and supportive atmosphere where friendships are forged and skills are honed.

What sets the Sofia Open apart from other tournaments is the unique opportunity it provides for competitors to gain experience in multiple disciplines. Unlike some organizers who restrict participants to fighting in only one division, we understand the importance of versatility and growth. That’s why we encourage fighters to embrace the chance to showcase their talents across various disciplines, allowing them to expand their skill sets and truly test their mettle.

Rest assured, our team at ISFA has worked tirelessly to ensure that every detail of this event is meticulously planned. From the state-of-the-art venue to the seamless organization, we strive to provide the best possible experience for our fighters and fans.

So mark your calendars for July 1st and join us at the ISFA Submission  Challenge 2023. Together, let’s celebrate the spirit of competition, the joy of combat sports, and the unity that comes from embracing our shared passion. We can’t wait to see you there!

Warm regards, The ISFA Team

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Saturday, February 10
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Lokomotiv Stadium Sofia
NPZ Voenna rampa, 1231
Sofia, Bulgaria
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