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Knee-Pin Smash Pass

PassHalf-guard passBelt: blue+Risk: moderateIBJJFADCCNo-GiSub-OnlyMMA

The Knee-Pin Smash Pass is a pressure-based half guard pass where the top player pins the opponent’s bottom thigh with their knee, immobilizing the hips before advancing directly to mount. This pass is favored for its control and ability to nullify knee-shield and deep half entries, making it a staple in both gi and no-gi competition.

Start
Top half guard, knee pinning opponent’s bottom thigh
End
Mount
Prerequisites: Cross-face control · Establishing an underhook · Hip switch mechanics · Tripod base in top half guard

Steps

  1. 1
    Establish Cross-Face and Underhook
    From top half guard, use your far arm to secure a deep cross-face (forearm under opponent’s head, palm on their far shoulder) and your near arm to underhook their far-side arm, keeping your elbow tight to their ribs.
  2. 2
    Pin the Bottom Thigh with Your Knee
    Slide your near-side knee (the one closest to their hips) over and across their bottom thigh, driving your knee cap into the middle of their quad and pinning it to the mat; keep your shin perpendicular to their thigh.
  3. 3
    Tripod Base and Weight Distribution
    Post your far-side foot wide and flare your toes for balance, while your hips drop low and your chest is heavy over their upper body; your posted foot and knee pin create a stable tripod base.
  4. 4
    Free Your Trapped Foot
    With your knee pinning their thigh, windshield wiper your trapped foot (the foot caught in their half guard) by turning your toes outward and sliding your knee up, using your shin to wedge their legs apart.
  5. 5
    Block Opponent’s Knee Shield Attempt
    As you free your foot, use your underhooking arm’s elbow to block their bottom knee from coming inside, keeping their thigh pinned and hips flat.
  6. 6
    Advance Your Knee to the Mat
    Slide your knee across their belt line and drop it to the mat on the far side, aiming for the space between their hip and armpit; maintain cross-face pressure to prevent them from turning in.
  7. 7
    Clear the Half Guard and Establish Mount
    Once your knee is through, sprawl your hips and circle your free foot to the outside, then drive your hips forward and settle into a tight mount, keeping your knees wide and toes active for base.

Key details most people miss

  • The pinning knee must be perpendicular and heavy, not angled or light—this prevents opponent’s hip escapes.
  • Cross-face pressure with a palm-on-shoulder grip stops the opponent from turning toward you or building frames.
  • Windshield wiper motion is best done slowly, using your shin as a wedge rather than brute force.
  • Underhook elbow blocks the bottom knee; if you lose this, the opponent can re-guard or invert.
  • Hips must stay low and chest heavy throughout—if you raise your hips, opponent can insert a knee shield.

Common mistakes

  • If you pin with your shin instead of your knee, opponent can shrimp and recover guard.
  • Failing to maintain cross-face allows opponent to turn in and set up underhooks or deep half.
  • Trying to pull your foot straight back instead of windshield wipering leads to your foot getting stuck.
  • Letting your hips ride too high gives opponent space to insert a knee shield or butterfly hook.
  • Not blocking the bottom knee with your underhook arm allows opponent to pummel and escape.

Counters & responses

They try: Opponent frames hard on your cross-face and creates space with their forearm.
You do: Switch to a double underhook or switch your cross-face hand to a head post, then re-pummel for the cross-face as you advance your knee.
They try: Opponent pummels their bottom knee inside for a knee shield.
You do: Drop your underhook elbow to block their knee, then re-pin their thigh with your knee and re-establish chest pressure.
They try: Opponent traps your underhook arm and attempts to roll you over.
You do: Widen your base by posting your far foot and shift your weight back toward their head, then free your arm by circling your elbow to the mat.
They try: Opponent locks a deep half guard by scooping your far leg.
You do: Switch your base by sprawling your hips back, cross-facing hard, and circling your trapped foot out before re-pinning their thigh.

Drill prescription

6 rounds × 2 min per round; partner gives 50% resistance, focusing on knee shield and underhook attempts; goal is 5 clean passes to mount per round, counting only when mount is held for 3 seconds.

How the masters teach it

Videos are still being curated for this technique. AI suggests these instructors:
Lucas Lepri — Emphasizes relentless cross-face and hip pressure, making the knee-pin feel like a vice.Bernardo Faria — Known for his half guard and smash passing, he uses a heavy knee pin and deep underhook to nullify bottom player movement.John Danaher — Focuses on the mechanical details of knee placement and weight distribution to maximize control and minimize escapes.Leandro Lo — Incorporates explosive knee slides with a tight knee pin, transitioning fluidly to mount or back exposure.
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