The Lumberjack Sweep is a fundamental half guard sweep that capitalizes on underhook control to off-balance and sweep an opponent who is attempting to pass. Named for the chopping motion used to break down the opponent’s base, this technique is particularly effective against opponents who overcommit their weight forward or fail to establish proper crossface control. The sweep combines hip movement, underhook leverage, and precise timing to elevate the opponent and transition to a dominant top position. This technique serves as a cornerstone of modern half guard systems, providing a reliable option when the opponent is pressuring into your half guard. The Lumberjack Sweep’s effectiveness lies in its ability to exploit the opponent’s forward momentum, turning their pressure into a liability. By controlling the underhook and creating the proper angle, the bottom player can generate significant leverage despite being in an inferior position. This sweep integrates seamlessly with other half guard attacks, forming part of a comprehensive sweeping system that keeps opponents defensive and hesitant to engage.
From Position: Half Guard (Bottom)
Key Attacking Principles
What are the key principles for executing Lumberjack Sweep?
- Establish and maintain deep underhook control on the opponent’s far side
- Create angle by turning your body toward the underhook side
- Use your trapped leg to control opponent’s base and prevent posting
- Generate upward momentum through hip extension and bridge
- Time the sweep when opponent commits weight forward
- Chain to alternative attacks if sweep is defended
Prerequisites
What do you need before attempting Lumberjack Sweep?
- Half guard bottom position with one leg controlling opponent’s leg
- Deep underhook established on opponent’s far side armpit
- Opponent’s weight committed forward without strong crossface
- Inside leg (trapped leg) has hook or control on opponent’s thigh
- Free hand controlling opponent’s near side wrist or belt
- Head positioned on underhook side to prevent crossface
Execution Steps
How do you execute Lumberjack Sweep step by step?
- Establish underhook control: From half guard bottom, swim your inside arm deep under opponent’s armpit on the far side. Your hand should emerge near their far shoulder blade. Simultaneously cup your free hand around their near side wrist or grab their belt to prevent posting. Keep your head pressed against their ribs on the underhook side to block crossface attempts.
- Create angle and hip out: Turn your entire body toward the underhook side, creating a 45-degree angle relative to your opponent. Hip out away from them by pushing with your outside leg and pulling with your inside hook. This angle is critical as it positions your hips beneath theirs and sets up the sweeping leverage. Your shoulders should now be perpendicular to theirs.
- Secure opponent’s base leg: Your inside leg (the one in half guard) should hook deep around opponent’s trapped leg, with your foot positioned behind their knee. Squeeze your knees together to control their leg completely. Your outside leg posts on the mat for base. This prevents them from extracting their leg or posting to defend the sweep.
- Generate sweeping momentum: Explosively extend your hips upward and toward the underhook side while pulling hard with your underhook arm. Simultaneously push your head into their ribs and use your free hand to prevent them from posting. The motion resembles chopping down a tree - hence the name Lumberjack Sweep. Drive your hips high to elevate their base leg completely off the mat.
- Complete rotation and sweep: Continue the rotational momentum, rolling your opponent over your body toward the underhook side. Keep your underhook tight and control their trapped leg throughout. Your body should rotate 180 degrees, bringing you from bottom to top position. Maintain constant pressure and connection to prevent them from turtling or rolling through.
- Establish top control: As you complete the sweep, land in side control or knee on belly position. Keep your underhook deep and immediately work to secure crossface control with your free hand. Pin their hips with your weight and establish strong shoulder pressure. If opponent attempts to recover guard, use your underhook to control their shoulder and prevent them from turning in.
Possible Outcomes
| Result | Position | Probability |
|---|---|---|
| Success | Side Control | 60% |
| Failure | Half Guard | 25% |
| Counter | Half Guard | 15% |
Opponent Counters
How might your opponent counter Lumberjack Sweep?
- Opponent establishes strong crossface and flattens you (Effectiveness: High) - Your Response: Abandon sweep and transition to deep half guard or electric chair position. Use your underhook to swim back to deep half, or switch to attacking the far knee for old school sweep variation. → Leads to Half Guard
- Opponent posts their free hand on the mat to block the sweep (Effectiveness: Medium) - Your Response: Use your free hand to strip their posting arm while continuing sweeping pressure. Alternatively, transition to kimura attack on the posted arm, or switch to waiter sweep if they overextend their post. → Leads to Half Guard
- Opponent extracts their trapped leg and begins passing (Effectiveness: High) - Your Response: If leg begins extracting, immediately switch to butterfly hook or transition to single leg x-guard. Use your underhook to prevent them from establishing side control and create frames to recover full guard. → Leads to Half Guard
- Opponent sprawls back and pulls their weight away (Effectiveness: Medium) - Your Response: Follow their movement by transitioning to deep half guard or coming up on the single leg. Use their backward motion to establish deep position or attack their base with single leg control. → Leads to Half Guard
Safety Considerations
What are the safety concerns for Lumberjack Sweep?
When practicing the lumberjack sweep, execute the technique with control to avoid dropping your partner unexpectedly or causing them to land awkwardly. The sweeping motion should be smooth and controlled, especially during initial drilling phases. Partners should communicate if they feel uncomfortable with the speed or force of the sweep. Be particularly careful when transitioning to top position to avoid driving your knee into your partner’s ribs or landing with full body weight on them. If you’re being swept, don’t post your arm rigidly to block the sweep as this can result in shoulder or wrist injuries; instead, learn to roll with the momentum and turtle if necessary. When drilling, start with slow, cooperative repetitions and gradually increase resistance as both partners become comfortable with the mechanics. Ensure adequate mat space around you as the sweep creates rotational movement that can carry both practitioners several feet from the starting position.