Yes. Athletes from unregistered clubs may enter Judo Stars League tournaments and compete in the individual standings. However, their results will not count towards the club rankings or team standings. Athletes representing foreign teams and clubs must obtain prior approval from the League organizers.

You must complete the club registration process on the League’s platform. Club registration is completely free of charge and is valid from 1 January to 31 December of the current calendar year. Registered clubs are eligible to participate in the club rankings and team standings and to compete for season-end awards presented as part of the Judo Stars Awards, including Club of the Year and Coach of the Year.

While registration is open, submit the online entry form on the website again with the correct information. The latest submission will be considered valid.

Once registration has closed and the entry lists have been published, submit your request to the League’s support team via Telegram: https://t.me/judo_chat.

Changes can only be made before the deadline established for the relevant tournament. Requests to withdraw an entry must also be submitted exclusively through this channel.

If you need to change your belt information during the registration period, complete and submit the online entry form again. The most recent submission will be used.

If registration has closed and the preliminary entry lists have been published, contact the League’s support team through its official Telegram channel: https://t.me/judo_chat.

Under the League’s official regulations, athletes compete in the following age groups:

• Main League tournaments (boys and girls): U-9, U-11, U-13 and U-15.
• White Belts Festival: U-4, U-5, U-6, U-7, U-8, U-9, U-10, U-11, U-12 and U-13.
• Ne-waza tournament: U-6 and U-7.
• Tail Tag tournament: U-4 and U-5.

To determine the correct age group for your year of birth, consult the regulations published on the page of the relevant tournament. Age groups are calculated based on the calendar year in which the competition takes place.

Weight categories are determined by the athlete’s age group. Please consult the regulations published on the page of the relevant tournament.

White Belts Festival: There are no fixed weight categories. Athletes are grouped into pools of three or four based on the actual body weight declared on their online entry form.

All relevant information is available on the official website, www.judostars.com:

• Regulations: participation requirements and tournament procedures.
• Rules: competition rules and athlete participation requirements.
• Tournaments: a list of upcoming events.

Before contacting the support team, please check the relevant sections of the website:

• Regulations — entry requirements and tournament procedures.
• Rules — competition rules and requirements for participating athletes.
• Tournaments — a list of upcoming events.

The competition format depends on the type of event. Two formats are used:

• Main League tournaments: either a knockout system with repechage for athletes who lose in the quarterfinals, or a round-robin system. Winners are determined separately in each weight category.
• White Belts Festival: athletes are divided into pools of three or four. Final positions within each pool are determined by the number of wins.

If fewer than four athletes are registered in a weight category when registration closes, the organisers may merge that category with an adjacent one to ensure that athletes have sufficient competitive opportunities.

Bout duration depends on the athlete’s age group:

• U-9 and U-11: 2 minutes of contest time.
• U-13 and U-15: 3 minutes of contest time.
• Ne-waza and Tail Tag events for the youngest athletes: 1 minute.

Yes. Athletes at the White Belts Festival are also divided according to their experience of regular training:

• Athletes with less than 12 months of training experience.
• Athletes with more than 12 months of training experience.

This information must be declared during registration to help ensure fair and safe competition.

There is no mandatory weigh-in at the White Belts Festival. The draw is based on the body weight declared in the online entry form.

However, the Refereeing Commission may conduct random weight checks if an athlete’s appearance raises concerns about a possible discrepancy.

If an athlete’s actual weight exceeds the declared weight by more than 1 kg, the athlete will be disqualified, and the entry fee will not be refunded.

Athletes compete in round-robin pools of three or four. Every registered participant is therefore guaranteed at least two bouts during the tournament.

The Festival has official divisions for boys and girls. However, when individual pools of three or four athletes are formed, the draw may combine boys and girls in the same pool.

The key factors in forming these groups are the athletes’ age, weight and level of preparation.

Ne-waza is a judo-based tournament for the U-6 and U-7 age groups.

Its main feature is that bouts start and take place exclusively from a kneeling position, on the ground.

If one athlete executes a technical action that brings their opponent down onto the tatami, the Refereeing Commission evaluates the action as a full throw.

Each bout lasts one minute.

Tail Tag is a game-based tournament incorporating elements of judo for the youngest participants in the U-4 and U-5 age groups.

• Clothing: Regular sports shorts and a T-shirt are permitted. Wearing a judogi is optional. Participants compete barefoot. The organizers provide a white belt and a colored fabric strip (the tail).
• Objective: Pull the fabric strip from behind the opponent’s belt while keeping your own strip attached.
• Duration: Each game lasts one minute and consists of three periods. An early victory is awarded to the first participant to score two points (waza-ari).
• Prohibited actions: Grabbing the opponent’s body or clothing, pushing, striking, deliberately stepping off the tatami or forcing the opponent out of bounds are strictly prohibited.

Restrictions depend on the age group:

• U-9, U-11, U-13 and the White Belts Festival: All joint-locking and choking techniques are strictly prohibited, as are throws initiated from the knees and throws performed with the foot braced against the opponent’s abdomen and the opponent taken over the head.
• U-15: Only joint-locking techniques are prohibited.

Uniforms designed for other martial arts, including sambo, karate and taekwondo, are strictly prohibited.

The judogi must be clean, white or blue, and made from fabric with a minimum weight of 250 g/m².

Boys are not permitted to wear a T-shirt under the judogi jacket. Girls must wear a plain white, short-sleeved, close-fitting T-shirt without any designs or markings.

Protective equipment containing metal ribs or other rigid components is also prohibited.

Athletes must step onto the podium wearing a clean judogi with the belt correctly tied.

Shoes, headwear and headphones are strictly prohibited on the podium. Athletes may not display other clothing or flags representing clubs or sponsors. Only the official national flag of the athlete’s country is permitted.

Violations of these conduct requirements may result in the organisers cancelling the athlete’s results.

All registrations must be completed online using the official entry form on www.judostars.com. Entries submitted through any other method will not be accepted. To complete registration, you must fill in all required fields, pay the applicable entry fee and upload a copy, photograph or screenshot of the payment confirmation.

Providing false or inaccurate information during registration is considered falsification and will result in the athlete’s immediate disqualification and the cancellation of all their results.

If you experience any problems with registration, tournament entry or participation, contact the support team directly via the League’s official Telegram channel: https://t.me/judo_chat.

To help the support team resolve the issue as quickly as possible, include the following information in your message:

• The athlete’s first and last name.
• The name of the sports club.
• The name of the tournament.
• A brief description of the problem.
• A screenshot of the error, if applicable.

Entry fees must be paid exclusively by bank transfer using the payment details published on the official page of the relevant event. Cash payments are not accepted.

Payment must be confirmed by uploading a copy, photograph or screenshot of the payment document to the online registration form.

Refund eligibility and conditions depend on the rules of the specific tournament, which are published on its event page. All refund requests must be submitted exclusively to the support team through the League’s Telegram channel: https://t.me/judo_chat.

No refund will be issued if:

• The athlete fails to attend the scheduled weigh-in or accreditation.
• The entry is withdrawn after the established deadline.
• The athlete is disqualified for a rule violation.
• The athlete fails to meet the applicable technical requirements.

Online tournament registration is considered complete only once payment of the entry fee has been confirmed. If you experience payment difficulties, contact the support team via Telegram: https://t.me/judo_chat, and attach a screenshot of the error.

To verify the athlete’s details, the accreditation committee must be presented with an original document confirming the athlete’s identity and exact date of birth, such as a passport or birth certificate.

Athletes who cannot provide an original document will not be permitted to compete.

Athletes must be weighed wearing approved sportswear: a T-shirt and shorts. As an alternative, they may wear judo trousers and a T-shirt or a complete judogi.

Weighing in wearing underwear, socks, jeans, crop tops or polo shirts is prohibited.

The maximum permitted allowance above the upper weight limit of the category is 500 grams.

Athletes who fail to attend the weigh-in at the time specified in the official schedule will be withdrawn from the tournament. Their entry fee will not be refunded.

If an athlete exceeds the weight limit by more than 500 grams, they may be moved to the next weight category only with their consent and subject to the decision and conditions established by the organizers of the specific tournament.

The exact start times for each age group will be published in the Schedule section after registration has closed and all entries have been processed.

Entry lists, competition results, draws and brackets are managed through the specialized Sport Data system.

Medical certificates are not checked during online registration. However, full responsibility for meeting the medical requirements rests with adult athletes, coaches and parents.

By entering an athlete in a tournament, you confirm that the athlete has undergone a medical examination, holds valid medical clearance to compete in judo and has a valid personal accident insurance policy.

Judo is a contact sport. By submitting an entry, parents and coaches voluntarily accept the risks associated with participation.

The organizers, referees and coaches are not liable for injury or harm to a participant’s life or health resulting from legitimate competitive actions or from the athlete’s failure to comply with safety requirements.

All enquiries are accepted exclusively through the League’s official Telegram channel: https://t.me/judo_chat.

Requests submitted through any other communication channel will not be considered by the organizers.

To help the support team investigate and resolve your issue as quickly as possible, your message must include:

• The athlete’s first and last name.
• The name of the sports club.
• The name of the tournament.
• A brief and clear description of the question or technical problem.
• A screenshot of the error or any other relevant supporting information, if applicable.