In baseball, an out occurs when the umpire rules a batter or baserunner out for one of the reasons given below. When three outs are recorded in an inning, a team's half of the inning (their turn at batting), ends.
To signal an out, an umpire generally makes a fist with one hand, and then flexes that arm either upward, particularly on pop flies, or forward, particularly on routine plays at first base. Home plate umpires often use a "punch-out" motion to signal a called third strike.
Ways of making outs
- Some common ways batters or runners are put out are when:
- The batter is out when:
- Strikeout-related outs:
- with two strikes, the batter swings at a pitched ball and misses;
- with two strikes, they do not swing at a pitch that the umpire judges to be in the strike zone (and the catcher catches the ball and does not drop it);
- The batter foul tips a pitch directly back into the catcher's mitt, and the catcher holds the ball and does not drop it;:5.09(a)(2)
- with two strikes, they bunt a pitch into foul territory;:5.09(a)(4)
- the third strike is pitched and caught in flight;:5.09(a)(1)
- on any third strike, if a baserunner is on first and there are fewer than two outs (even when not caught);:5.09(a)(3)
- Outs related to the batter's box:
- they are hit by their own fair ball, outside the batter's box, before the ball is played by a fielder;:5.09(a)(7)
- they hit a pitch while one foot is entirely outside the batter's box;
- they step from one batter's box to the other when the pitcher is ready to pitch;
- Other ways of being out:
- Ways that runners can be out:
- The batter-runner is out when:
- a preceding runner interferes with a fielder trying to complete a double play on the batter-runner;
- Tag-related outs:
- a fielder with a live ball in their possession touches first base or tags the batter-runner before the batter-runner reaches first base (except when the batter is awarded first base, such as on a base on balls)
- the batter-runner does not return directly to first base after overrunning the bag and they are tagged with the ball by a fielder.
- Flyout-related outs:
- a batted ball is caught in flight (fly out);
- they hit an infield popup while the infield fly rule applies;
- a fielder intentionally drops a line drive with fewer than two outs in a force situation (man on first, men on first and second, men on first and third, bases loaded) in an attempt to create a double play;
- Any baserunner, other than the batter-runner, is out when:
- they are forced out; that is, they fail to reach their force base before a fielder with a live ball touches that base;
- a fielder catches a batted ball in flight, and subsequently, some fielder with a live ball in possession touches the runner's time of pitch base before the runner tags up (appeal play);
- while they are attempting to reach home plate with fewer than two outs, the batter interferes with a fielder and such action hinders a potential tag out near home plate;
- they are found to have committed a mockery of the game, for example, a stolen base of first from the second; or
- they are found to be an illegal substitute.
- Any baserunner, including the batter-runner, is out when:
- they are tagged out; that is, touched by a fielder's hand holding a live ball while in jeopardy, such as while not touching a base;
- they stray more than three feet (.91 meters) from their running baseline in attempting to avoid a tag;
- they pass a base without touching it and a member of the defensive team properly executes a live ball appeal;
- they pass a preceding runner who is not out;
- they commit interference, such as when they contact a fielder playing a batted ball, or when they contact a live batted ball before it passes a fielder other than the pitcher;
- they are touched by a fair ball in fair territory before the ball has touched or passed an infielder. The ball is dead and no runner may score, nor runners advance, except runners forced to advance. EXCEPTION: If a runner is touching their base when touched by an infield fly, they are not out, although the batter is out;
- they intentionally abandon their effort to run the bases after touching first base; or
- they run the bases in reverse order in an attempt to confuse the defense or to make a travesty of the game.:5.09(b)(10)
In baseball statistics, each out must be credited to exactly one defensive player, namely the player who was the direct cause of the out. When referring to outs credited to a defensive player, the term putout is used. Example: a batter hits a fair ball that is fielded by the shortstop. The shortstop then throws the ball to the first baseman. The first baseman then steps on first base before the batter reaches it. For this play, only the first baseman is credited with a putout, while the shortstop is credited with an assist. For a strikeout, the catcher is credited with a putout, because the batter is not out until the pitched ball is caught by the catcher. (If the catcher drops the third strike and has to throw the batter-runner out at the first base, the first baseman receives the putout while the catcher receives an assist.) When an out is recorded without a fielder's direct involvement, such as where a runner is hit by a batted ball, the fielder nearest to the action is usually credited with the putout.
Although pitchers seldom get credited with putouts, they are credited with their role in getting outs through various pitching statistics such as innings pitched (a measure of the number of outs made by the pitcher, used in calculating their ERA) and strikeouts.