BUTTERFLY HALF-GUARD

Butterfly half-guard is the hybrid configuration in which the bottom player has one foot in butterfly position (hooked under the opponent's thigh) while the other leg is in half-guard with the opponent's leg trapped. The position combines the structural advantages of butterfly guard (elevation-based sweeps) with the additional control of half-guard, producing one of the most versatile modern guard configurations.

The mechanics involve the bottom player on the back with one foot hooked under the opponent's same-side thigh (the butterfly hook) and the opponent's far-side leg trapped between the bottom player's legs (the half-guard component). The bottom player's hands typically grip the opponent's far-side arm or sleeve, with the broader configuration producing the structural lever for sweeps. From butterfly half-guard the bottom player can: sweep via butterfly elevation when the underhook is available; sweep via half-guard underhook system when the butterfly hook is denied; transition to full butterfly guard if the trapped leg can be released; or transition to deep half-guard if the bottom player can burrow underneath.

Butterfly half-guard has been refined by various modern competitors. Notable practitioners include Bernardo Faria (who used it as part of his broader half-guard system), Tom DeBlass, and various modern hybrid-guard specialists. The position pairs particularly well in transitions — the bottom player can convert to butterfly, half-guard, or deep half-guard depending on tactical context. Defensively the butterfly half-guard is countered by maintaining wide base, by establishing whizzer on the bottom player's near arm, or by passing on the half-guard side rather than the butterfly side.