Half-guard top with underhook control is a foundational position for passing and pinning, where the top player secures an underhook on the far side to dominate their opponent’s upper body. This control limits the bottom player’s ability to recover guard or launch sweeps, creating strong pathways to pass or attack. Mastery of this position is essential for any competitive grappler seeking to systematically dismantle half-guard defenses.
Start
Top half guard
End
Top half guard
Prerequisites: Cross-face control · Establishing an underhook · Hip switching from top · Posting for base retention
Steps
1
Establish Chest-to-Chest Connection
From top half-guard, flatten your opponent by driving your chest heavy onto theirs, aiming for your sternum to align with their upper chest. Keep your hips low and weight distributed through your toes for mobility.
2
Secure the Far-Side Underhook
Thread your far-side arm (opposite your trapped leg) under their armpit, palm up, and reach deep toward their far shoulder or lat. Keep your elbow tight to their body to prevent them from pummeling back inside.
3
Anchor with the Cross-Face
With your near-side arm, cross-face by sliding your forearm across their face, aiming to turn their head away from you. Grip their far-side shoulder blade or lat with a C-grip for maximum control.
4
Knee Position and Hip Angle
Slide your free knee (the knee of your non-trapped leg) up toward their hip or armpit, creating a wedge. Angle your hips at roughly 45° to their torso for optimal pressure and mobility.
5
Active Posting for Base
Post your free foot wide and toes active, ready to adjust if they bridge or shrimp. Keep your posted hand light and ready to base if needed, but prioritize maintaining your underhook and cross-face.
6
Pin the Near-Side Shoulder
Drive your cross-face shoulder down into their jaw or chest, pinning their near-side shoulder to the mat. This prevents them from turning into you or initiating deep half-guard entries.
7
Monitor and Adjust Underhook Depth
Periodically re-pummel your underhook deeper if they attempt to strip it. Keep your elbow glued to their ribs and your hand reaching high, minimizing space for their frames.
8
Transition Threats
From this control, be ready to initiate knee-cut, smash, or back-take transitions as your opponent reacts. Use your underhook to lift and turn their upper body, exposing pathways for advancement.
Key details most people miss
The underhook must be palm-up and reach high toward the opponent’s far lat or shoulder—shallow underhooks are easily countered.
Cross-face pressure is not just about discomfort; it turns their head and collapses their near-side shoulder, killing their ability to frame or shrimp.
Your hips should be angled, not square—this prevents the opponent from getting under you for deep half or sweeps.
Keep your underhooking elbow glued to their ribs, as any daylight allows them to repummel or frame.
Constant micro-adjustments with your chest and hips are necessary to maintain pressure as the bottom player moves.
Common mistakes
Allowing the underhook to drift shallow gives the opponent space to repummel and recover guard.
Failing to apply cross-face pressure lets the opponent turn into you and set up underhooks or sweeps.
Keeping hips too square makes you vulnerable to being rolled or having your base broken.
Neglecting to post with your free foot allows the opponent to off-balance you with bridges or hip escapes.
Lifting your underhooking elbow creates a gap for the opponent to insert frames or pummel for their own underhook.
Counters & responses
They try: Opponent pummels for their own underhook
You do: Drop your underhooking elbow to their ribs, re-thread your arm deeper, and use your chest to flatten their shoulder before they establish inside position.
They try: Opponent frames hard on your cross-face arm
You do: Switch your cross-face to a near-side underhook or windshield-wiper your arm to break their frame, then re-establish cross-face pressure.
They try: Opponent bridges and hip escapes to recover guard
You do: Widen your base with your free foot, drop your hips, and walk your trapped leg back to prevent their knee from inserting.
They try: Opponent enters deep half-guard by scooping your trapped leg
You do: Slide your knee higher toward their armpit, sprawl your hips back, and use your underhook to lift their far shoulder, denying the angle for deep half.
Drill prescription
6 rounds × 2 min positional sparring; top player must establish underhook and cross-face, maintaining control for 20 seconds or advancing to mount/back; bottom player uses 60% resistance to escape or recover guard; goal: 4 successful holds or transitions per round.
How the masters teach it
Bernardo Faria
Emphasizes relentless pressure and deep underhook, using it as a base for his signature over-under and half-guard passing sequences.
Bernardo Faria BJJ Fanatics
Lucas Lepri
Known for dynamic hip switching and seamless transitions from underhook control to knee-cut passes.