How do I develop wrist locks in BJJ?

Wrist locks are the surprise submission of BJJ. Because they are not drilled as frequently as armbars or chokes, many opponents are unprepared to defend them. The mechanics are simple: isolate the hand and bend the wrist toward the forearm. From mount, when your opponent posts their hand on the mat to prevent you from climbing higher, trap the hand and apply downward pressure to the wrist. From closed guard, the overhook wrist lock catches people when they try to posture. During guard passes, if their hand gets caught in your legs, a quick wrist lock is available. The key to effective wrist locks is speed and precision because the leverage window is small and the opponent can often pull their hand free if you are slow. They work excellently as combination threats. If someone is defending a choke with stiff arms, their rigid posture makes the wrist more vulnerable. IBJJF rules allow wrist locks starting at blue belt, while some other competitions allow them at all levels.