Alias · Guard
Open guard (lying)
Also known as Supine Guard — the canonical term used on this site.
Training background: Informal description distinguishing from seated open guard
Colloquial — supine open guard
Open guard (lying) is the colloquial name for the supine guard — the open-guard variant in which the bottom player is lying on their back rather than seated upright.
Etymology. “Open guard” specifies the open-leg category; “(lying)” qualifies the body posture (supine rather than seated). The compound distinguishes the lying-back open-guard from the seated open-guard variants.
Mechanics. The supine open-guard provides hip mobility and leg-extension leverage that the seated variant does not — the lying posture changes the available attacking and defensive options.
Cross-reference. “Supine guard” is the canonical name. Full mechanical coverage on Supine Guard.