Force play in the context of "Run (baseball)"

Baseball is a bat-and-ball sport played between two teams of nine players each, taking turns batting and fielding. The game occurs over the course of several plays, with each play beginning when a player on the fielding team, called the pitcher, throws a ball that a player on the batting team, called the batter, tries to hit with a bat. The objective of the offensive team (batting team) is to hit the ball into the field of play, away from the other team's players, allowing its players to run the bases, having them advance counter-clockwise around four bases to score what are called "runs". The objective of the defensive team (referred to as the fielding team) is to prevent batters from becoming runners, and to prevent runners advancing around the bases. A run is scored when a runner legally advances around the bases in order and touches home plate (the place where the player started as a batter).

The initial objective of the batting team is to have a player reach first base safely; this occurs either when the batter hits the ball and reaches first base before an opponent retrieves the ball and touches the base, or when the pitcher persists in throwing the ball out of the batter's reach. Players on the batting team who reach first base without being called "out" can attempt to advance to subsequent bases as a runner, either immediately or during teammates' turns batting. The fielding team tries to prevent runs by using the ball to get batters or runners "out", which forces them out of the field of play. The pitcher can get the batter out by throwing three pitches which result in strikes, while fielders can get the batter out by catching a batted ball before it touches the ground, and can get a runner out by tagging them with the ball while the runner is not touching a base.

In baseball, a baserunner is safe when he reaches a base without being put out by various ways. While a runner is touching a base, he is usually not in jeopardy of being put out, and is thus "safe" from fielders' actions, such as tags. The runner is in jeopardy once again, negating this safety, when:

• he ceases touching the base
• he is forced to reach another base on a force play or when tagging up
• a runner further along the basepath legally returns to the base that he is touching (two runners on the same base)
• he commits interference.

By the rules, a runner is safe when he is entitled to the base he is trying for. Umpires will signal that a runner is safe by extending their elbows to their sides and then extending their arms fully to the side. For emphasis, an umpire may fully cross and extend his arms several times to indicate safe. Verbally, the umpire will usually simply say "safe". If a close play occurs that may have appeared to be a putout, the umpire will also call a reason for the safe call, such as "he dropped the ball" or "he missed the tag".

In baseball, a player is credited with a plate appearance (denoted by PA) each time he completes a turn batting. Under Rule 5.04(c) of the Official Baseball Rules, a player completes a turn batting when he is put out or becomes a runner. This happens when he strikes out or is declared out before reaching first base; or when he reaches first base safely or is awarded first base (by a base on balls, hit by pitch, catcher's interference, or obstruction); or when he hits a fair ball which causes a preceding runner to be put out for the third out before he himself is put out or reaches first base safely (see also left on base, fielder's choice, force play). A very similar baseball statistic, at bats, counts a subset of plate appearances that end under certain circumstances.

In baseball statistics, a putout (PO) is awarded to a defensive player who (generally while in secure possession of the ball) records an out by one of the following methods:

• Tagging a runner with the ball when the runner is not touching a base (a tagout)
• Catching a batted ball on the fly (a flyout)
• Retrieving a batted ball hit along the ground which a defensive player subsequently throws to another defensive player who then catches it- the latter simultaneously occupying a base, or by subsequently touching a base while in possession of the ball- thus recording an out of a batter or runner, before the batter, or non-batting runner, can touch the base to which he is compelled to advance (a force out- referred to as a groundout if the player who has been put out is the batter-runner attempting to reach first base- or, if done after a flyout, a doubling off).
• Catching a thrown ball and tagging a base to record an out on an appeal play
• Catching a third strike (a strikeout)
• Being positioned closest to a runner called out for interference

In a regulation nine-inning game, the winning team will always have a total of 27 putouts, as one putout is awarded for every defensive out made; this is one aspect of proving a box score.

In baseball and softball, an uncaught third strike (sometimes referred to as dropped third strike or non-caught third strike) occurs when the catcher fails to cleanly catch a pitch for the third strike of a plate appearance. In Major League Baseball (MLB), the specific rules concerning the uncaught third strike are addressed in Rules 5.05 and 5.09 of the Official Baseball Rules:

On an uncaught third strike with (1) no runner on first base, or (2) with two outs regardless of runners on base, the batter immediately becomes a runner. The strike is called, but the umpire does not call the batter out. The umpire may also signal that there is "no catch" of the pitch. The batter may then attempt to reach first base and must be tagged or forced out. With two outs and the bases loaded, the catcher who fails to catch the third strike may, upon picking up the ball, step on home plate for a force-out or make a throw to any other base in an effort to force out a runner. An "uncaught" strike includes not only pitches dropped by the catcher, but also pitches that hit the ground before the catcher attempts to catch it.