Over-under is a stand-up grappling position in which both combatants have one overhook

Overhook

An overhook, also called a whizzer, is a clinch hold that is used to control the opponent. An overhook is performed from any direction by putting an arm over the opponent's arm, and encircling the opponents arm or upper body. Having an overhook with one arm is called a single overhook, while having...

 and one underhook

Underhook

An underhook is a grappling term for a clinch hold that is used to control the opponent. It is performed from any direction by putting an arm under the opponents arm, and holding the opponents midsection or upper body. Having an underhook with one arm is called a single underhook, while having...

, and is the most common stand-up grappling position in mixed martial arts

Mixed martial arts

Mixed Martial Arts is a full contact combat sport that allows the use of both striking and grappling techniques, both standing and on the ground, including boxing, wrestling, Brazilian jiu-jitsu, muay Thai, kickboxing, karate, judo and other styles. The roots of modern mixed martial arts can be...

. The head is typically on the same side as the overhooked arm, to allow greater weight to be put on the opponent's underhooked arm, and hence preventing the opponent from using the underhooked arm effectively. The over-under position can be advanced into a pinch grip tie

Pinch grip tie

A pinch grip tie, or an over-under bodylock, is a clinch hold and stand-up grappling position that is an extension of the over-under position, but having both hands locked behind the opponents back. The hands are typically locked with a palm-to-palm grip, palm-to-wrist grip or fingers-to-fingers grip...

  by locking the hands behind the opponent's back.

See also

• Bear hug
  Bear hug
  In wrestling, a bear hug, also known as a bodylock, is a grappling clinch hold and stand-up grappling position where the arms are wrapped around the opponent, either around the opponent's chest, midsection, or thighs; sometimes with one or both of the opponents arms pinned to the opponent's body...
  
  
• Collar-and-elbow position
  Collar-and-elbow position
  A collar-and-elbow hold is a stand-up grappling position where both combatants have a collar tie, and hold the opponent's other arm at the elbow. Generally the opening move in professional wrestling, the collar-and-elbow is generally a neutral position, but by pushing the hand on the elbow to the...
  
  
• Double collar tie
• Double underhooks
• Pinch grip tie
  Pinch grip tie
  A pinch grip tie, or an over-under bodylock, is a clinch hold and stand-up grappling position that is an extension of the over-under position, but having both hands locked behind the opponents back. The hands are typically locked with a palm-to-palm grip, palm-to-wrist grip or fingers-to-fingers grip...