Your opponent has strong crossface control in half guard - how do you create the entry angle for deep half?

When facing strong crossface, use your inside hand to frame against their crossface arm at the bicep or wrist to create momentary separation. Simultaneously execute a sharp hip escape away from them to create the angle. As the crossface loosens from the angle change, swim your head underneath their arm by turning your face toward their hips. The hip escape is the primary tool because the crossface becomes less effective when your body angle changes significantly.

What is the most critical hip movement during the Deep Half Entry?

The diagonal hip escape away from the opponent is the most critical movement. This creates the angular pathway needed to thread your head underneath the opponent's hips. Without this hip escape, your body remains square to the opponent and there is no space to slide underneath their center of gravity. The hip escape should move your hips toward the opponent's far leg side, opening the channel between their legs and your upper body.

What grip must be established before committing to the deep half entry dive?

The underhook on the trapped leg side must be established before committing to the entry. This underhook serves as the primary control mechanism throughout the transition and eventually becomes the deep underhook on the far leg in the completed deep half guard. Without this underhook, you have no control over the opponent's position during the entry and risk being flattened or having your head trapped underneath with no way to create sweep leverage.

Your opponent posts their free leg wide as you begin the entry - how do you adjust?

When the opponent posts wide, they are creating a stable base that makes the entry more difficult. Use your free hand to push or pull their posted leg to destabilize their wide base. Alternatively, apply lockdown on their trapped leg to pull them forward, collapsing their base and recreating the forward weight commitment you need. You can also switch to attacking the posted leg directly with a single leg X entry rather than forcing the deep half against their strengthened base.

What conditions must exist before attempting the Deep Half Entry from Half Guard?

Four conditions must be present: half guard entanglement on the opponent's leg must be secure, you need at least one frame or underhook preventing complete flattening, the opponent's weight must be committed forward or actively pressing down, and your hips must have sufficient mobility to create the entry angle through hip escape. If any of these conditions is missing, the entry will likely fail and leave you in a compromised position.

The opponent applies a whizzer as you attempt to establish the underhook - what is your response?

The whizzer can actually facilitate the entry. As the opponent overhooks your arm, duck your head deeper underneath their body and use the rotational pressure of the whizzer to assist sliding underneath. The whizzer pushes your shoulder down and inward, which aligns with the direction you want to travel for the entry. Alternatively, if the whizzer is too tight, switch to a different attack such as the old school sweep or back take that exploits the whizzer grip positioning.

Deep Half Entry from Half Guard Attacker | BJJ Technique Guide

As the attacker executing the Deep Half Entry, your objective is to transition from standard half guard bottom into deep half guard by sliding your upper body underneath your opponent’s center of gravity. This transition requires precise timing, proper underhook mechanics, and coordinated hip movement to thread your head and shoulder beneath the opponent’s hips. The entry converts a position where you may be losing the upper body control battle into one where you hold significant mechanical advantage for sweeps and back takes. Success depends on reading your opponent’s weight distribution and exploiting moments when they commit pressure forward, using their own energy against them as you redirect underneath their base.

From Position: Half Guard (Bottom)

Key Attacking Principles

What are the key principles for executing Deep Half Entry from Half Guard?

Time the entry when opponent commits weight forward during passing pressure rather than forcing against a well-based opponent
Secure the underhook on the far leg before committing to the dive underneath to ensure control throughout the transition
Use hip escape mechanics to create the angle needed for threading your head underneath the opponent’s hips
Maintain constant connection with the trapped leg throughout the entry to prevent the opponent from extracting and passing
Protect your head during the transition by keeping it tight against the opponent’s inner thigh to avoid crossface counter
Coordinate upper and lower body movement simultaneously rather than moving in isolated segments

Prerequisites

What do you need before attempting Deep Half Entry from Half Guard?

Half guard entanglement secured on at least one of the opponent’s legs with sufficient control to prevent immediate extraction
At least one frame or underhook preventing the opponent from achieving complete chest-to-chest flattening
Hip mobility sufficient to angle your body and create space for sliding underneath the opponent
Opponent’s weight committed forward or actively applying downward pressure that can be redirected
Head and shoulder positioned to thread underneath without being blocked by crossface or head control

Execution Steps

How do you execute Deep Half Entry from Half Guard step by step?

Establish underhook control: From half guard bottom, fight to secure the underhook on the trapped leg side. Thread your arm deep under the opponent’s armpit and around their back or far hip. This underhook serves as your primary control mechanism throughout the entire entry sequence and must be established before committing to the dive.
Create entry angle with hip escape: Execute a hip escape away from the opponent to create the angle needed for sliding underneath. Your hips should shift toward the opponent’s far leg side, opening the pathway between their legs and your body. This angle is critical because without it you cannot thread your head underneath their hips effectively.
Break opponent’s crossface connection: Use your free hand to frame against the opponent’s crossface arm or shoulder, creating enough separation to begin the dive. If they maintain a strong crossface, swim your head underneath their arm by turning your face toward their hips. This frame prevents them from pinning you flat during the most vulnerable phase of entry.
Thread head underneath opponent’s hips: Duck your head underneath the opponent’s near-side hip, driving your forehead toward their far hip while maintaining the underhook. Your head should travel in an arc underneath their center of gravity, with your ear eventually positioned against their inner thigh. Keep your chin tucked to protect your neck during this threading motion.
Secure deep underhook on far leg: As your head clears underneath, transition your underhook arm to wrap deeply around the opponent’s far thigh. Your arm should encircle the thigh completely with your hand reaching toward their far knee or behind it. Pull the leg tightly against your chest to establish the primary deep half guard control point that powers all subsequent attacks.
Wedge shoulder against inner thigh: Position your shoulder firmly against the opponent’s inner thigh near their far hip, creating the fulcrum point that powers all deep half guard sweeps. Your shoulder and head together form a wedge that disrupts the opponent’s base from below. This contact point is the mechanical foundation of the entire deep half guard system.
Adjust leg positioning for control: Reposition your legs to secure the half guard entanglement from the deep half configuration. Your bottom leg hooks the opponent’s near leg while your top leg either reinforces the hook or creates a frame against their hip. This leg positioning prevents the opponent from stepping over or extracting their trapped leg during consolidation.
Consolidate deep half guard position: Tighten all connection points simultaneously by pulling the far leg close, pressing your shoulder wedge firmly, and adjusting your hip angle for maximum sweep leverage. Test the position by making small hip elevation movements to verify you have the mechanical advantage needed for sweep attacks from deep half guard.

Possible Outcomes

Result	Position	Probability
Success	Deep Half Guard	55%
Failure	Half Guard	30%
Counter	Flattened Half Guard	15%

Opponent Counters

How might your opponent counter Deep Half Entry from Half Guard?

Crossface and sprawl to flatten bottom player before entry completes (Effectiveness: High) - Your Response: Accelerate the entry timing and use the free hand to swim underneath the crossface arm. If caught mid-entry, transition to lockdown to reset and attempt again with better timing. → Leads to Flattened Half Guard
Whizzer on underhook arm to prevent diving underneath (Effectiveness: Medium) - Your Response: Use the whizzer pressure to your advantage by redirecting it into the entry. As they overhook, duck your head deeper and use their whizzer pressure to slide underneath. The whizzer actually assists the entry if you angle correctly. → Leads to Half Guard
Hip switch and backstep to extract trapped leg and change angle (Effectiveness: High) - Your Response: Follow the opponent’s movement with your legs and maintain the half guard hook. If they successfully switch hips, transition to single leg X-guard or re-guard rather than forcing the deep half entry against their changed angle. → Leads to Flattened Half Guard
Post free leg wide and lower hips to eliminate entry space (Effectiveness: Medium) - Your Response: Attack the posted leg with your free hand to destabilize their wide base. Alternatively, use the lockdown on their trapped leg to pull them forward and recreate the space needed for the entry angle. → Leads to Half Guard

Common Attacking Mistakes

What mistakes should you avoid when executing Deep Half Entry from Half Guard?

1. Diving underneath without establishing the underhook first

Consequence: Head gets trapped underneath opponent with no control, leading to crossface, flattening, and easy pass to side control
Correction: Always secure the underhook before initiating the dive. The underhook is your lifeline throughout the transition and must be your first priority before any other movement.

2. Attempting the entry when opponent’s base is wide and weight is evenly distributed

Consequence: Opponent easily sprawls and flattens the entry attempt, leaving you in a worse position with head trapped underneath and no leverage
Correction: Time the entry when opponent commits weight forward during passing attempts. Read their weight distribution and attack during transitions when their base is compromised.

3. Losing leg control on the trapped leg during the entry transition

Consequence: Opponent extracts their leg and passes to side control or mount while your head is stuck underneath their hips with no defensive structure
Correction: Maintain constant half guard hook throughout the entry. Your legs should continuously control the trapped leg even as your upper body is threading underneath.

4. Leaving head exposed during entry rather than keeping it tight to opponent’s body

Consequence: Opponent establishes devastating crossface or guillotine control, stalling the entry and creating submission danger
Correction: Keep your head tight against the opponent’s inner thigh throughout the entry. Your ear should be pressed against their leg, not floating in open space where it can be targeted.

5. Not creating sufficient angle through hip escape before attempting the dive

Consequence: Unable to thread head underneath opponent’s hips, resulting in a stalled entry attempt that exposes you to flattening and heavy pressure
Correction: Execute a full hip escape to create the diagonal angle needed before initiating the dive. Your hips should be significantly offset from the opponent’s centerline.

6. Rushing the transition without breaking opponent’s upper body control first

Consequence: Opponent maintains crossface throughout the entry, preventing completion of the position and holding you in a compromised half-entry state
Correction: Use frames and grip fighting to clear the crossface before committing to the entry. A clean entry path is more important than speed.

Training Progressions

How do you train Deep Half Entry from Half Guard (Attacker)?

Phase 1: Entry Mechanics - Basic movement pattern and body positioning Practice the entry movement with a compliant partner who provides no resistance. Focus on the hip escape angle, head threading path, underhook transition, and shoulder wedge positioning. Perform 20 repetitions per side until the movement becomes smooth and automatic.

Phase 2: Timing and Weight Reading - Reading opponent’s weight distribution for entry timing Partner applies moderate half guard top pressure with varying weight distribution patterns. Practice identifying the optimal moment for entry based on when partner shifts weight forward. Develop sensitivity to pressure changes that signal entry opportunities.

Phase 3: Counter Defense Integration - Completing entry against common defensive reactions Partner applies specific counters including crossface, whizzer, and hip switch. Practice adjusting your entry angle and timing to overcome each counter. Develop contingency plans for when the primary entry path is blocked.

Phase 4: Live Entry Sparring - Entry execution under full resistance Positional sparring starting from half guard bottom with full resistance from top player. Score points for successful deep half entry. Integrate the entry into your overall half guard game plan with chains to other attacks when the entry is defended.

Phase 5: Transition Chain Development - Connecting entry to sweep and back take systems After successful entry, immediately chain into sweep attempts including waiter sweep, Homer Simpson sweep, and rolling back take. Develop automatic follow-up sequences that maximize the advantage gained from a successful deep half entry.

Safety Considerations

What are the safety concerns for Deep Half Entry from Half Guard?

The Deep Half Entry from Half Guard involves significant neck loading as the head threads underneath the opponent’s body. Practitioners should develop neck strength and flexibility progressively before attempting this transition at full speed. Avoid forcing the entry if your head is trapped in an awkward angle, as this can strain cervical vertebrae. During training, communicate with your partner and tap immediately if you experience any neck discomfort during the entry or if your partner applies excessive downward pressure while your head is underneath. Always warm up the neck thoroughly before practicing deep half entries.

Deep Half Entry from Half Guard Attacker

Outcomes