What is a hammerlock in wrestling?

What is the hammerlock in plain terms?

The hold takes one of the opponent’s arms behind the back. It can be used to control a wrestler on the mat, and it is one of the older holds named in rules books. The reference glossary used for neighboring pages does not list it, so this page relies on the rules text.

Because the hold works on a joint, rule writers set explicit limits on how far the arm may be moved.

What does the NCAA book prohibit?

The illegal-holds section lists a hammerlock above the right angle and a twisting hammerlock. The appendix adds two illustrations of an illegal hammerlock. The first notes that a hammerlock is a legal hold provided the hand is not forced away from the body, and that the shown version pulls the hand away from the body, making it illegal. The second says the arm is pulled away from the body and is therefore illegal.

The row about the right angle is from the prohibition list; the rows about the hand come from the appendix captions.

How do international rules treat it?

UWW Article 50 lists illegal holds that include twisting of arms more than 90 degrees and bringing the opponent’s arm behind the back while applying pressure where the forearm forms an acute angle. Those entries do not use the word hammerlock, but they cover similar positions.

Athletes who wrestle both styles should therefore treat the hold as restricted wherever it is used and ask the official or coach about the specific event.

Why are joint limits stressed so often?

Because forcing an arm past its range risks injury, the NCAA book prohibits the bending, twisting or forcing of any limb beyond its normal limits of movement, which applies to the hammerlock as to any other hold.

A wrestler who feels pressure on the shoulder in practice should say so at once, and a partner should release.

What should a parent do with the term?

When a parent hears the word at a match, the useful question is whether the arm was moved only within the allowed range. The official decides in real time and may stop the match for an injury or an illegal hold.

For the whole list of prohibited holds, read the rules reference. Read illegal moves in wrestling.

Smart Wrestler records penalties and injury stoppages the table enters. It does not judge a hold.