Ground grappling refers to all the grappling techniques that are applied while the grapplers are no longer in a standing position. A large part of most martial arts and combat sports which feature ground grappling is positioning and obtaining a dominant position. A dominant position (usually on top) allows the dominant grappler a variety of options, including: attempting to escape by standing up, obtaining a pin or hold-down to control and exhaust the opponent, executing a submission hold, or striking the opponent. The bottom grappler is, on the other hand, concerned with escaping the situation and improving his position, typically by using a sweep or reversal. In some disciplines, especially those where the guard is used, the bottom grappler may also be able to finish the fight from the bottom by a submission hold.
When unskilled fighters get embroiled in combat, a common reaction is to grab the opponent in an attempt to slow the situation down by holding them still, resulting in an unsystematic struggle that relies on brute force. A skilled fighter, in contrast, can perform takedowns as a way of progressing to a superior position such as a mount or side control, or using clinch holds and ground positions to set up strikes, choke holds, and joint locks. A grappler who has been taken down to the ground can use defensive positions such as the guard, which protects against being mounted or attacked. If a grappler is strong and can utilize leverage well, a takedown or throw itself can be a form of winning.; the impact can render an opponent unconscious. On the other hand, grappling also offers the possibility of controlling an opponent without injuring them. For this reason, most police staff receive some training in grappling. Likewise, grappling sports have been devised so that their participants can compete using full physical effort without injuring their opponents.