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The Calf Slicer is a leg submission that targets the calf and knee area. It works by compressing the muscles and tendons of the calf and putting pressure on the knee joint, causing significant pain and potential injury. This submission is often used in both MMA and Brazilian Jiu-Jitsu (BJJ), typically during transitions on the ground or when your opponent tries to escape a dominant position.


  1. Control the Opponent’s Leg:
    • The setup of the Calf Slicer starts by controlling one of your opponent’s legs. You generally need to be in a top position or side control with your opponent’s leg either trapped or in close proximity.
  2. Position Yourself Properly:
    • Once you have control over the opponent’s leg, you need to position your body so that your shin can apply pressure on the back of their calf. Typically, this is done by positioning your thigh against the opponent’s calf.
  3. Wrap the Leg:
    • The next step is to place your opponent’s leg between your own legs. One of your legs should be placed across their body, with your shin running along their calf. Your other leg may help to block their knee or assist in applying additional pressure to the calf.
  4. Apply the Pressure:
    • With your opponent’s leg secured, squeeze your legs together while pulling down on their trapped leg. The force comes from your shin pressing against their calf and applying pressure, while your other leg helps to lock the position and prevent escape.
  5. Finish the Submission:
    • To finish the Calf Slicer, apply more pressure by pulling their leg towards you and squeezing your legs tighter. This will compress the calf, knee, and lower leg, causing intense pain. The submission often forces a tap-out due to the sharp discomfort.

  1. Posture and Flexibility:
    • Flexibility plays a significant role in defending the Calf Slicer. If you keep your calf muscle tense and maintain a strong, stable posture, it can reduce the likelihood of your opponent locking in the submission.
  2. Prevent the Leg Trap:
    • The primary defense against a Calf Slicer is to avoid getting your leg trapped in the first place. Using footwork and shifting your body can prevent your opponent from wrapping their legs around yours, thus preventing the submission.
  3. Roll or Twist the Leg:
    • If caught in the Calf Slicer, one defensive maneuver is to twist or roll your leg out of the submission. This motion reduces the pressure on the calf and can help you escape the submission.
  4. Control Your Opponent’s Hips and Movement:
    • A key to defending the Calf Slicer is maintaining control of the opponent’s hips. If you prevent them from advancing and applying pressure to your leg, you can limit their ability to lock in the submission.
  5. Pressure and Counter-Attack:
    • If you are being attacked with the Calf Slicer, applying pressure to your opponent’s upper body, such as attempting to break their posture or pushing them away, can destabilize their base and disrupt their submission attempt.

  1. Reposition Your Leg:
    • If caught in the Calf Slicer, repositioning your leg to shift the pressure from your calf to a less vulnerable part of your leg may help mitigate the submission’s effectiveness.
  2. Engage in a Leg Lock Battle:
    • Another way to counter the Calf Slicer is by transitioning to a leg lock or ankle lock counter, as your opponent might be exposed to submissions in their pursuit of the Calf Slicer.
  3. Use Leverage to Push Your Opponent Off:
    • By using leverage and pushes with your hands or feet against your opponent’s body or hips, you can create space and reduce the pressure on your calf. This movement may allow you to escape or regain a more dominant position.
  4. Break Their Control:
    • Breaking your opponent’s grip on your leg is essential. If they are gripping tightly to your leg, working to break their control will give you more opportunities to escape or defend against the submission.

  • Timing and Positioning: The Calf Slicer requires precise timing. You must execute the submission when the opponent’s leg is vulnerable, often when they attempt to escape from your control or during a transition.
  • Hip Alignment: Proper hip alignment is crucial. If you align your hips properly and keep pressure on your opponent’s leg, you maximize the effectiveness of the Calf Slicer.
  • Flexibility and Strength: It’s essential to have strong leg muscles to execute the submission and good flexibility to create a proper angle on your opponent’s calf.

  • Failing to Trap the Leg Securely: A common mistake is not securing the opponent’s leg completely before trying to apply pressure. Without full control of their leg, your opponent can easily escape.
  • Rushing the Submission: Rushing into the Calf Slicer without ensuring proper positioning and control may leave you vulnerable to counters or submissions from your opponent.
  • Not Applying Enough Pressure: A common error is not generating sufficient pressure on the calf, which reduces the likelihood of forcing a tap. Proper pressure and leverage are critical to the success of this submission.

The Calf Slicer is an effective submission that targets the calf muscle and knee joint, causing pain and potentially leading to injury. By positioning your body correctly and applying pressure to the leg, you can force your opponent into submission. Defending against the Calf Slicer involves preventing the leg trap, maintaining good posture, and using movement and leverage to escape. Proper execution of the Calf Slicer requires timing, flexibility, and strength, and success depends on applying the submission with the right amount of pressure and control.