Alias · Guard
Floor guard
Also known as Supine Guard — the canonical term used on this site.
Training background: Informal — used in some gym environments
Colloquial — supine-on-the-floor open guard
Floor guard is the colloquial name for the supine guard — flagging the floor-contact posture that distinguishes the lying-back open guard from seated and standing variants.
Etymology. “Floor” specifies the body-position context (back on the floor); “guard” attaches the position-family. The label is informal coaching vocabulary used interchangeably with “supine guard” and “open guard (lying).”
Mechanics. The supine posture provides hip mobility and leg-extension leverage that the seated open-guard does not — the lying back changes the available attack and defence options.
Cross-reference. “Supine guard” is the canonical name; “open guard (lying)” is the alternate descriptive name. Full mechanical coverage on Supine Guard.