Possession (sports) opportunity to score. In bat-and-ball games including baseball and cricket, the ball is controlled by the fielding team, which are on defense. In several sports, possession is exchanged after the offensive team scores, or when the defensive team physically takes control of a "live" (in play) ball through a fumble, interception, or steal. In gridiron football, possession is additionally controlled through a series of allotted plays called downs, over which the offensive team must move the ball a certain distance down the field, or lose possession. Possession at the start of a game, or in a neutral restart, may be
Safety (gridiron football score) is now slightly more likely after the rule change in 2015 which allowed the defense to take possession and score on a conversion attempt. Before 2015, the only scenario in which a one-point safety could have been scored in the NFL would have involved the defense kicking or batting a loose ball out the back of its own end zone without taking possession of the ball. In college football and the NFL, a conversion safety can also be scored by the defense, though this has never occurred. To accomplish this, the team attempting the try would need to somehow be