Defending against the Vaporizer pass means maintaining the integrity of both control mechanisms—the lockdown and the underhook—while actively threatening sweeps and transitions that punish pass attempts. The defender’s goal is to make every extraction attempt costly by increasing lockdown pressure, re-establishing controls when loosened, and capitalizing on the weight shifts inherent in passing mechanics to execute sweeps or advance to dominant attacking positions like the Electric Chair or Truck. The best defense is an aggressive offense that forces the top player to abandon their pass and focus on surviving your attacks instead.
Opponent’s Starting Position: Vaporizer (Top)
How to Recognize This Attack
- Top player widens base significantly and drives shoulder pressure down, indicating they are establishing a stable platform for extraction attempts
- Top player’s trapped knee begins pointing toward the mat rather than staying wide, signaling the start of leg circulation to narrow their profile
- Top player establishes whizzer control or strong crossface against your underhook, indicating they are neutralizing upper body control before attempting lockdown clearance
- Top player’s weight shifts laterally in small controlled movements rather than explosive bursts, indicating methodical extraction rather than desperate yanking
- Top player’s free leg posts wider than normal, suggesting they are preparing base stability for the extraction phase
Key Defensive Principles
- Maintain constant lockdown pressure by extending the trapped leg away from your body whenever you feel extraction attempts beginning
- Re-establish the underhook immediately whenever it is threatened by whizzer or crossface, as the underhook is the engine of all your offensive options
- Use the top player’s weight shifts during pass attempts as triggers for sweep execution rather than passively trying to retain the position
- Threaten multiple attacks simultaneously so the top player cannot focus exclusively on extraction without exposing themselves to sweeps or submissions
- Keep close distance at all times to prevent the top player from creating the space needed for effective lockdown clearing
- Read the top player’s leg orientation and pressure direction to anticipate which extraction variant they are attempting
Defensive Options
1. Increase lockdown extension and re-establish underhook depth to counter extraction
- When to use: As soon as you feel the top player’s trapped knee pointing toward the mat or any loosening in the lockdown configuration
- Targets: Vaporizer
- If successful: Top player’s extraction attempt fails and they remain trapped in the Vaporizer with your full control re-established
- Risk: Focusing too much on re-locking may delay offensive transitions and allow top player to settle into a more stable defensive posture
2. Execute Old School sweep using top player’s weight shift as the trigger
- When to use: When top player shifts weight laterally during extraction attempt and posts a hand on the mat creating a leverage fulcrum
- Targets: Half Guard
- If successful: You sweep the top player and establish a dominant top position, completely reversing the positional hierarchy
- Risk: If the sweep fails, you may lose lockdown position and end up in standard half guard bottom without the Vaporizer controls
3. Insert knee for half guard retention as lockdown begins to clear
- When to use: When you feel the lockdown is about to be fully cleared and you cannot re-establish it in time
- Targets: Half Guard
- If successful: You prevent the full pass to side control and retain a guard position from which you can work to re-establish the lockdown or transition to other guards
- Risk: Accepting half guard means losing the Vaporizer control and its associated offensive options
4. Threaten Electric Chair transition to force top player to abandon extraction and defend
- When to use: When top player commits weight forward during extraction attempt, elevating their hips and creating the leg separation angle needed for Electric Chair
- Targets: Vaporizer
- If successful: Top player abandons pass attempt to defend the submission threat, resetting the positional battle with your Vaporizer controls intact
- Risk: If the Electric Chair setup is too shallow, the top player may use the transition to accelerate their extraction
Best-Case Outcomes for Defender
→ Vaporizer
Maintain constant lockdown pressure through leg extension and re-establish underhook control whenever it is threatened. Actively increase whip-up pressure during extraction attempts to make the top player’s position increasingly unstable. The goal is to make the Vaporizer so uncomfortable that they abandon pass attempts entirely.
→ Half Guard
Time the Old School sweep to coincide with the top player’s lateral weight shift during extraction. Post your outside foot and bridge toward their posted hand, using their own base structure against them. The sweep works best when they have partially committed to extraction and their weight distribution is compromised.
Test Your Knowledge
Q1: What are the two critical control points you must maintain to prevent the Vaporizer pass? A: The lockdown leg entanglement and the underhook. The lockdown controls the top player’s leg mobility and provides the structural foundation for all attacks, while the underhook gives leverage for the whip-up motion and sweep attempts. Both must be maintained simultaneously because addressing only one allows the top player to systematically work through the other. Losing the underhook makes the lockdown a passive hold, and losing the lockdown makes the underhook insufficient for offense.
Q2: When is the optimal timing to execute the Old School sweep against a pass attempt? A: The optimal timing is when the top player shifts weight laterally during their extraction attempt. At this moment, their weight distribution is compromised and they cannot base effectively in the direction of the sweep. Look for them to post a hand on the mat, which creates a fixed fulcrum point. Bridge toward their posted hand while driving off your outside foot. Their own committed weight shift amplifies the sweep force rather than allowing them to resist.
Q3: Your lockdown is loosening despite active re-locking attempts - what is your contingency plan? A: Transition from pure retention to offensive threat. Attempt an Electric Chair entry if their weight is forward, or an Old School sweep if they are shifting laterally. If sweeps are not available, prepare to insert your knee for half guard retention before the lockdown fully clears. The critical decision is whether to commit to a sweep attempt that risks losing the position entirely or accept the positional downgrade to half guard where you can rebuild. Generally, one strong sweep attempt is worth the risk before accepting half guard.
Q4: How do you counter the backstep extraction variant where the top player steps their free leg backward? A: When you feel the free leg stepping backward rather than the standard forward circulation, increase your lockdown extension immediately to resist the changed extraction angle. The backstep creates a different force vector, so adjust your hip angle to face toward the stepping direction. If the backstep begins to succeed, use their backward movement momentum to accelerate a Truck entry or back take rather than fighting the extraction directly. Their backward step often exposes their back if you can follow the rotation.