Also known as: keylock · ude-garami
Lifting the arm straight up with no brushing motion along the mat.
Why it failsYou get a painful wrist tweak and the shoulder never loads; strong opponents just muscle out.
FixBrush their wrist and knuckles along the mat toward their belt line while lifting their elbow off the floor.
Attacking the near arm while your chest weight is gone.
Why it failsThey bridge into the gap, recover the arm, and often take your back on the roll.
FixKeep chest-to-chest pressure and the cross-face throughout the attack.
Letting their hand grab their own belt or lapel.
Why it failsThe grip removes the lever and the arm cannot be rotated at all.
FixBreak that grip first (knee, elbow drive, or a two-handed peel) before setting the figure four.