Wrestling tie-ups are the control positions used in the standing phase of BJJ. They determine who has the dominant position before a takedown or guard pull. Mastering tie-ups means controlling the standing game and choosing your preferred entry.
The collar tie is a hand on the back of their neck (the nape). It allows head control and creates setups for takedowns and arm drags.
The underhook is an arm under their arm on one side, getting your shoulder under their armpit. It's the most important position in wrestling tie-ups.
The overhook goes over their arm. Used defensively to counter underhooks, and offensively as a throw entry.
Both arms around their body (one underhook, one overhook). The most powerful tie-up — allows trips, lifts, and suplex-style takedowns.
The standing game is a constant battle for tie-up position. Fight for underhooks, break their collar tie, and use level changes to create openings.
In gi, collar and sleeve grips supplement the tie-ups. In no-gi, you rely purely on body contact (underhooks, collar ties, wrist control) without fabric grips.
See also: Duck Under Guide, Arm Drag System, Russian Tie Guide, Level Change Guide