Is slamming illegal in Jiu-Jitsu? What the IBJJF rules say
Slams are banned for every age and belt, gi and no-gi, and mean instant disqualification; lifting your opponent is still legal for adults
Slamming is illegal in Jiu-Jitsu for every athlete, from 4-year-old kids to adult black belts, in both gi and no-gi. The rule is in the IBJJF rule book, and anyone who slams an opponent is disqualified on the spot, with no warning and no penalty count.
It is one of the few items on the illegal moves chart that does not change with age or belt. And it is back in the conversation after a Brazilian black belt suffered a serious neck injury from a slam at a tournament in Brazil in August 2026.
What a slam is in Jiu-Jitsu
A slam happens when the athlete caught in closed guard or a triangle stands up with the opponent wrapped around him and drives that opponent back into the mat. The most common scenario is the triangle defense: unable to escape the choke, the top athlete lifts the attacker and throws him down to break the hold.
What the IBJJF rules say
The rule book has an illegal moves chart broken down by age and belt. Slamming sits next to spinal locks and scissor takedowns in the group banned for every division, including adult brown and black belts in no-gi, who have the most open list in the rules.
Using an illegal move for your division is a severe foul, and the penalty is immediate disqualification from the match. That puts slamming in a different category from regular fouls, such as grabbing inside the sleeve or running out of the mat area, which add up on the scoreboard: the first one is just marked, the second gives the opponent an advantage, the third gives two points, and only the fourth means disqualification.
Can you lift your opponent?
For adults, yes. Standing up with an opponent in your guard is part of passing and is not penalized. The rules even describe this situation: when an athlete pulls closed guard and ends up hanging in the air, the opponent with the grip has up to three seconds to put him on his back and then hold the position for three more seconds to score the takedown.
The line between a legal play and a severe foul is how the opponent goes back to the mat. Setting him down is allowed. Throwing him into the mat is a slam.
Extra protection for kids
In divisions up to 12 years old, the rules give the referee a specific job. When a child is lifted off the mat in a triangle or closed guard, the referee must stand behind the child to protect the neck.
Another rule helps avoid the situation altogether. Up to age 15, at any belt, and for white belts at any age, jumping guard on a standing opponent is not allowed, and neither are attacks that start with a jump, like the flying triangle and the flying armbar. That is a regular foul, and the referee restarts the match with both athletes standing.
Why slams are so dangerous
The athlete being slammed has his back to the mat and his legs locked around the opponent, so he cannot control the fall or break it. The force of the impact goes straight to the head, neck and spine.
The most recent case happened at Super Pro Jiu-Jitsu 2026, on August 22, in Londrina, Brazil. In a no-gi black belt match, Willian “Kabuto” Masuda was slammed, suffered a serious neck injury and lay motionless on the mat. The referee stopped the match, and the athlete spent time in the ICU. The case is under investigation.
About a month later, Kabuto spoke for the first time on social media. He said he is being treated at home and thanked everyone for their support: “To everyone who has been praying for me, thank you from the bottom of my heart. You have no idea how much that helps me get stronger.”
Does the rule apply at every tournament?
The illegal moves chart applies to IBJJF events and is the reference for most tournaments run by federations and leagues. Pro events and organizations with their own rule sets decide their own rules, so athletes should always check each event’s rules before competing.
The full list of what each belt can and cannot do is in the VF Comunica guide to illegal moves.
Have you ever seen a slam in competition? Should the penalty go beyond a match disqualification? Let us know in the comments.
