Sumigaeshi

Sumigaeshi, also written sumi-gaeshi (角返し), is a judo throw classified as a sutemi-waza, or sacrifice throw. The name translates to “corner reversal,” reflecting the throw’s angular entry and turning movement. It is one of the traditional nage-waza techniques taught at the Kodokan and remains a staple in many grappling arts.

Technique overview

In sumi-gaeshi, tori uses uke’s forward momentum to enter on uke’s inside corner. From a suitable grip on uke’s sleeve and collar (or belt), tori pivots onto the mat and drops to the side or back while turning toward the inside corner. The core action is a combination of a backward sacrifice and a leg action that pivots uke over tori’s center, flipping uke onto their back. Variations exist for right- and left-side sumi-gaeshi, depending on which inside corner is attacked and which grips are used. Proper kuzushi (balance breaking) and precise timing are essential for immediate execution and to minimize counterattack.

Key considerations

Sumi-gaeshi relies on tori’s willingness to sacrifice their balance momentarily to force uke’s weight over them. The throw is often used as a counter to a forward or aggressive attack, but it can also be employed as a deliberate technique in a nage-waza sequence. Because it involves a fall, it requires solid ukemi (breakfall) and good control to prevent injury to both participants.

Notes

Historically, sumi-gaeshi is part of classical judo pedagogy and is widely taught in various grappling disciplines that draw on judo’s repertoire.