Ushiro X — Reverse X Guard
Ushiro X is an inverted X-guard position in which the bottom player faces the same direction as the opponent.
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FamilyGuardLevelAdvancedPerspectiveBottomIntentOffensiveSafetyElevatedHubLeg EntanglementsMapView on graph →This technique has elevated risk. Make sure you've covered the prerequisites before attempting.
Manage injuries →Position map Connects to 6 positions across 3 relationshipsOpen in the map →123456←Enters from
Ushiro X — also called reverse X or back X — is a guard position reached by inverting from X-guard. In standard X-guard, the bottom player faces the top player with hooks under and over one of the top player’s legs. In ushiro X, the bottom player has rotated 180 degrees at the hip so that they now face the same direction as the top player. The hooks change orientation accordingly: what was a lifting hook becomes a controlling hook from behind, and the relationship between the bottom player’s hips and the top player’s leg changes the geometry of available exits.
The reason ushiro X is categorised as advanced is not mechanical complexity — the inversion itself can be drilled in isolation without difficulty. The reason is what it leads to. The primary exit from ushiro X is into cross ashi garami, which is one of the most direct inside heel hook entries available from a guard position. Anyone entering ushiro X is one short transition away from a heel hook attack and, equally, from being in a position where their partner is one short transition away from finishing a heel hook on them. That context must be understood before this position is trained.
Ushiro X is not a submission-generating position on its own. It is a transitional hub between X-guard and leg entanglement positions on one side, and sweep or back take on the other. Its value is in the threat it creates and the dilemma it poses: the top player cannot base out in the standard direction without feeding the cross ashi entry, but if they rotate to deny it, a back take angle opens.
Ruleset contextADCC Legal Heel hooks legal throughoutIBJJF No-Gi Legal The position is legal at every belt; the heel hook finish is legal for adult brown and black belts, and illegal below that, in masters divisions, and in the giBefore drilling Ushiro X — Reverse X Guard
Elevated RiskUshiro X — Reverse X Guard is an elevated risk technique. This position leads directly to inside heel hook entries. The cross ashi transition from ushiro X is the primary inside heel hook entry route. Heel hooks load the knee ligaments — specifically the ACL and MCL — through internal tibial rotation. Damage can occur with very little rotational movement; the joint does not need to be forced to a mechanical limit before the ligament is at risk. Serious injury can occur with very little rotational movement.
If you are new to this technique: read this section before anything else. Understanding the danger is part of understanding the technique.