Armbar

The fundamental joint lock

The armbar is the most fundamental submission technique in MMA — a joint lock that attacks the elbow by isolating the opponent's extended arm between the attacker's legs and hyperextending the joint over the attacker's hips. The technique works from multiple positions and is the foundational submission for both BJJ and MMA grappling systems.

Mechanics

From bottom closed guard, attacking the right arm:

• Pull the head down: from a posture-broken closed guard, pull the opponent's head and shoulders forward.
• Isolate the arm: grip the opponent's right wrist with your right hand; pull it across your body.
• Hip pivot: rotate your hips so they're perpendicular to the opponent. Your right leg comes over the opponent's head; your left leg stays across their back.
• Trap the arm: with both legs heavy on the opponent's upper body, the opponent's right arm is now isolated between your thighs.
• Hip up: lift your hips to hyperextend the elbow.
• Finish: maintain pressure until the opponent taps or the elbow gives.

Attack positions

• Closed guard armbar: from bottom closed guard. The Anderson Silva-Sonnen finish at UFC 117 was this entry.
• Mounted armbar: from full mount, isolating one arm and rotating down to a hip-perpendicular position.
• Side control armbar: from top side control, attacking the far arm.
• Back-take armbar: from back control, transitioning to an armbar when the opponent's defensive grip is broken.
• Standing armbar: rare but possible from clinch range against an overextended arm.
• Triangle-to-armbar transition: when the triangle is defended, the attacker can transition to an armbar by rotating around the opponent.

Common errors

• No head control: a posture-up opponent can pull the trapped arm out before the armbar locks.
• Legs too high or too low: the legs need to be on the opponent's shoulders and back, not their head and arm.
• Arm not centered: the attacked arm needs to be centered against the attacker's groin; off-center reduces the lever.
• No hip elevation: the hyperextension comes from lifting the hips, not from pulling the arm.
• Letting the opponent stand: an opponent who stands up with the armbar locked can slam the attacker to break the lock.

Defense

• Connect the hands: locking both hands together prevents the arm from being pulled straight for the armbar.
• Stack the opponent: driving forward into the armbar puts the opponent's weight on themselves and prevents the hip elevation.
• Stand up: from a locked armbar, standing up disrupts the lever and creates the slam-out option.
• Hand grip on the wrist: gripping the attacker's wrist or your own forearm to prevent the arm from being isolated.
• Roll out: rolling toward the attacker's hips disrupts the position.

Variations

• Straight armbar: the standard hyperextension version.
• Pose armbar: a slow-applied armbar where the attacker postures up to make the lock visible to the opponent before they tap.
• Reverse armbar: a less common variant attacking the elbow from a different angle.
• Flying armbar: a jumping entry that locks the armbar in mid-air. Rare but executed at UFC level by Rousimar Palhares.

Exemplified by

• Ronda Rousey: the armbar-from-judo-throw entries that produced six title-defense finishes.
• Anderson Silva: the triangle-armbar combination that finished Chael Sonnen at UFC 117 with 1:50 left in round 5.
• Khabib Nurmagomedov: the mounted-triangle-to-armbar that finished Justin Gaethje at UFC 254.
• Demian Maia: closed-guard armbar finishes across his welterweight title-contender career.
• Charles Oliveira: armbar finishes from multiple positions in the UFC.

Drills

• Solo entry reps: 50 armbar-setup reps from closed guard, focused on hip rotation and leg position.
• Partner cooperative reps: drilling the armbar against a cooperative partner.
• Defense drill: partner attacks the armbar; you practice connecting hands and posturing.
• Live ground sparring from closed guard: 3 × 3 min rounds where the bottom player attempts armbars.