Foot locks have exploded in popularity in modern BJJ. Once brushed off as low-percentage or “cheap,” these leg-based submissions are now part of the elite toolkit—effective, technical, and often match-ending. Whether you’re in a gi or no-gi scenario, foot locks offer strategic value for athletes of all sizes. They let you neutralize larger opponents, create openings against pressure passers, and finish fights from seemingly neutral positions.
How do Foot Locks Work in BJJ?
Foot locks are leg-based submissions that target the ankle and foot by applying pressure to the joint or surrounding tendons. While there are multiple types of foot locks in Brazilian Jiu-Jitsu, the most commonly used and permitted in competition is the straight ankle lock, also known as the Achilles lock.
Foot Lock vs. Ankle Lock
In BJJ, the terms “foot lock” and “ankle lock” are often used interchangeably, but they can describe slightly different concepts. A foot lock refers broadly to any submission that targets the foot or ankle. A straight ankle lock, however, is a specific type of foot lock that applies pressure to the Achilles tendon and ankle joint by hyperextending the foot.
Other types of foot locks (like heel hooks or toe holds) involve twisting motions and are often restricted in competition due to the risk of injury. In contrast, the straight ankle lock uses linear force, making it safer, more controlled, and legal in most divisions, including NAGA teen gi and adult no-gi divisions (as long as reaping is avoided).
Basic Mechanics of a Foot Lock
To finish a foot lock effectively, it’s not just about cranking the foot—it’s about proper alignment, tension, and control. Here’s a basic breakdown:
- Secure the Position: Use a setup like Ashi Garami or 50/50 to entangle the leg.
- Control the Foot: Wrap under the ankle, align your forearm with the Achilles, and grip tight.
- Posture & Finish: Slide your hips back, straighten your back, and drive your hips forward while pulling the foot in for the tap.
Types of Foot Locks in BJJ
There are several variations of foot locks used in Brazilian Jiu-Jitsu, each targeting different joints or soft tissue structures of the leg. Some are legal across most divisions, while others are restricted due to the higher risk of injury.
Straight Ankle Lock
A fundamental and widely legal submission, the straight ankle lock applies pressure to the Achilles tendon and ankle joint by hyperextending the foot. It is typically finished by bridging the hips forward while pulling the foot back.
Toe Hold
The toe hold targets the ankle by twisting the foot outward while controlling the toes. The grip resembles a kimura on the foot, and the rotational force places strain on the ankle and ligaments. It is typically reserved for advanced divisions due to the risk of injury.
Heel Hook
A powerful and highly effective submission, the heel hook applies twisting force to the knee by rotating the heel while controlling the leg. It’s banned in many competitions, especially for lower ranks and younger divisions, due to its high injury risk.
Calf Slicer
Also known as a calf crusher, this technique compresses the calf muscle between the attacker’s shin and their opponent’s thigh or hamstring. It causes intense muscle and nerve pain and can result in injury if held too long.
Knee Bar
The kneebar hyperextends the knee joint, similar to how an armbar attacks the elbow. Once the leg is isolated and straightened, the attacker bridges their hips forward to apply breaking pressure on the knee. It is legal in some advanced divisions but restricted in many rule sets.
Positions for Setting Up Foot Locks
Foot locks shine when your opponent steps or posts their leg. You’ll often find entries from:
- Single Leg X / Ashi Garami
- 50/50 Guard
- Butterfly Guard
- Open or Closed Guard transitions
- Body Lock scrambles
Importance of Foot Locks
Foot locks have become an essential part of the modern leg lock game because of how they balance the playing field. They let you attack from underneath, counter pressure, and finish quickly. In tournaments like NAGA, a solid ankle lock attempt can earn points or a tap. They’re also one of the few submissions legal for teens in gi and beginners in no-gi, as long as reaping and twisting aren’t involved.
Counters Against Foot Locks
Like any submission, the best way to defend a foot lock is to recognize it early and respond before your opponent gains full control. One of the most effective defenses is maintaining a strong posture and breaking grips before they become a threat. If your opponent can’t control your foot or extend your leg, they can’t finish the lock. Keep your knee line safe and actively fight for frames and hand control to prevent them from locking the submission.
In addition to preventative measures, many grapplers counter foot lock attempts with sweeps or submissions of their own. If your opponent becomes overly committed to attacking your foot, it can create openings to reverse the position, take the back, or set up your own attacks. With proper timing and balance, you can use their aggression against them, turning a foot lock attempt into a turning point in the match.
Final Thought
Despite what you may have heard, foot locks aren’t cheap tricks. They’re technical and effective when you know how to use them. If you can isolate a leg, trap a foot, and control the knee line, you can get the better of bigger, stronger, or more seasoned opponents. That’s the magic of foot locks. They level the playing field.
These submissions open up a whole new dimension of control and creativity. And in competitions like NAGA, where the ruleset favors fast, decisive attacks, a good foot lock gets you respect on top of points and wins.
It’s time to add foot locks to your arsenal, mess with some Ashi setups, and start building offense from the ground up. Then go check out our other breakdowns of other important BJJ techniques.