Knee Cut

Passing / Top / Pressure

A race between your chest connection and their frame reconstruction. Named after the knee, driven by the hip.

Category	Passing and top
Difficulty	Intermediate
Applies to	Gi and no-gi
Primary risk	Knee torsion for the passer; rib and shoulder load for the bottom player
Status	Published entry

The problem

You have one of their legs isolated between yours and you need to clear the leg line and arrive chest to chest on the far side, before they rebuild a knee shield or an elbow frame.

Most failures are connection failures, not mechanical ones. The knee cut works in drilling and stops working in rolling because the upper-body connection was skipped.

Objective

Arrive in a chest-to-chest position past the leg line with your weight forward and an established upper-body connection, having won the race against their frame.

Core concept

Headquarters — leg trapped, shin blocking, posture upright — is a junction, not a resting place. It presents the knee cut, the leg drag, the long step and the back step simultaneously, which forces a reaction you can read. Sitting there without reading anything gives the bottom player time to beat all four.

The pass completes when your hips descend and rotate into their torso. If you finish with your hips behind your lead knee, you have moved your leg past their guard without moving yourself.

Key mechanics

Establish the upper-body connection first. Underhook or cross-face on the far side. This is the step people skip.
Control the trapped leg properly. If their trapped knee can point back at you, they still have a frame.
Set the trailing leg. Too close and you have no drive; too far and you are off balance and sweepable.
Cut with the hip. Weight travels forward and down into the chest connection, not sideways over the leg.
Account for the free leg. It is what rebuilds the guard. Plan for it in the finish.

Common errors

Cutting before the upper-body connection exists.
Posting a hand on the mat instead of connecting to the opponent.
Staying upright too long. Comfortable and sweepable.
Driving harder into an established knee shield.
Treating a stall as failure rather than as a decision point.

Safety

The cutting knee rotates under load and can be caught in leg entanglements as it passes. The bottom player takes chest and rib pressure. Drill the finish slowly before adding drive, and release immediately if a leg is caught rather than powering through.

This entry is reference material. It cannot see your body, your training history or your partner, and it is not a substitute for instruction from a qualified coach who can.

Training progression

Static drill from headquarters, focusing only on establishing the underhook or cross-face. Do not cut.
Cut to chest connection and stop. Reset. Train the arrival, not the movement.
Bottom player defends with a knee shield only. Passer must recognise the stall and switch — back step or leg drag — rather than force it.
Live rounds from headquarters, passer must pass, bottom player must recover or sweep.

Journal: Knee-cut passing — connection, headquarters and hip — long-form Journal essay, written and awaiting publication
Half Guard
Back Control