Control the legs: heel hooks, ankle locks — and the way out.
Marco Tse, a Markham-based coach, teaches the way out of Single Leg X — one of the first leg-entanglement answers he learned, right after basic submission defense. His point: the simple version teaches the situation, and understanding the situation is what gets you free.
Watch the reelValter Walker — the UFC heavyweight who keeps finishing fights with exactly this — shows the inside heel hook: own the knee line, capture the heel, rotate. The most dangerous lock in the modern game, and a restricted one: illegal in IBJJF gi play and limited to the top no-gi divisions. Clip via Viniciusmachinejj.
Watch the reelA heel hook from the sambo side of the family: Reshetnikov — a World Cup champion and founder of a combat academy — twists the heel, his caption saying it in English and Russian, with #sambo in the tags. The warning stands as this shelf states it: heel hooks attack the knee, they are restricted or banned in much of IBJJF gi competition, and they arrive fast — drill the escape before the finish.
Watch the reelAnother entry from the sambo side of the family: Sviryd (Belarus — brown belt, Master of Sport, ADCC Pro and UWW grappling champion, Sambo Cup champion) posts the reel with hashtags only and no lock named, so it is filed descriptively under his name and your Leg lock label — shelf-mate to Reshetnikov's heel hook one row up.
Watch the reelEvery video is the creator's own, hosted on their channel — Grappling Matrix links out and credits them. Train within your limits and tap early.