blocks runner
Derek Jeter from tagging home plate. Unlike the other fielders, the catcher and pitcher must start every play in a designated area. The catcher must be behind
home plate in the
catcher's box, while the pitcher must be on the
pitcher's mound, with one foot in contact with the
pitcher's rubber. Once the ball is in play, however, the catcher and pitcher, like the other fielders, can respond to any part of the field necessary to make or assist in a defensive play. The defensive plays expected of catchers, aside from managing the pitcher by calling for pitches and catching them, include:
Preventing wild pitches and avoiding passed balls. Although the pitcher has a responsibility to throw with reasonable accuracy, catchers must be mobile enough to catch (or block) errant pitches. By doing so, a catcher prevents baserunners from advancing while the loose ball is retrieved. An errant pitch that eludes the catcher and allows a baserunner to take one or more additional bases is called a
wild pitch. (Techniques for blocking wild pitches are described in the previous section.) A pitched ball which would require only ordinary effort to be caught or blocked by the catcher—but is nonetheless misplayed, allowing a base runner to advance—is called a "passed ball".
Fielding high pop flies, often hit at unusual angles. In this case, the catcher must turn their back to the field in order to properly account for the spin of the ball, which often follows unpredictable paths.
Fielding catchable foul balls, in foul territory near the home plate.
Fielding weakly hit fair ground balls (including bunts) in front of home plate in order to throw to a base to complete a
groundout or a
fielder's choice play. The catcher must avoid hitting the batter-runner with the thrown ball, implying that they must move to a position in which they have a clear throw to the infielder at first base.
Guarding home plate on plays in which a baserunner attempts to score a run. The catcher is often obliged to catch a ball thrown from a fielder and to
tag out a runner arriving from third base. Naturally, the runner's objective, in this situation, is to elude the catcher's tag and touch the plate. Prior to 2014, the catcher's best strategy was to block the runner's path so as to prevent the runner from reaching the plate at all. Collisions between runners and catchers were common. Since the start of the 2014 season, a catcher may only obstruct a runner's path to home plate when he, the catcher, is in possession of the ball. Without the ball in hand, the catcher must allow the runner to score uncontested. If the catcher drops the ball while tagging the runner, the runner is safe. Although contact between a runner and a catcher was generally allowed in the major leagues until the beginning of the 2014 season, little league, high school, and college runners are encouraged or mandated to avoid significant contact.
Preventing stolen bases by throwing to
second base or
third base to allow an
infielder to tag a
baserunner attempting to reach the base. A catcher who is very good at preventing stolen bases is said to have a low stolen-base percentage. (A pitcher who is slow to deliver is often more at fault for stolen bases than the catcher is.) Ideally, a catcher should be able to get the ball from their glove to that of the player covering second base in under two seconds. This is referred to as a catcher's "pop time", the time elapsing between the popping sound of the pitch striking the catcher's mitt and the similar pop when the ball arrives at the glove of the fielder covering second base.
Rarely, a catcher can make a successful pick-off throw to a base to surprise an inattentive or incautious baserunner. Especially at the higher levels of baseball (where this play almost never results in an out), the catcher's snap throws are mainly for psychological effect. If the runner knows that the catcher often attempts snap throws, the runner is likely to take a smaller lead from their base before each pitch, which will allow the infielders an extra fraction of a second to throw the runner out at the next base if they attempt to advance (as, for example, when a
ground ball is hit).
Yadier Molina of the
St. Louis Cardinals and former MLB catcher
Iván Rodríguez are known for using pickoffs with success, particularly at first base. Teams may sometimes call a deliberate play, the
pitchout, wherein the pitcher intentionally throws the ball wide and high to the catcher, who comes out of their crouch to receive it and relays the ball quickly to a base to put a runner out.
Rarely, a catcher will run to first base or third base to participate in rundown plays at those bases. In certain game situations, typically a ball batted to the
shortstop or
third baseman with no runners on base,
the catcher may be expected to back-up first base in case the first baseman misses or mishandles a throw. In certain game situations, when a runner is on first and the batter bunts the ball or hits the ball softly, which causes the third baseman to rush in to get the ball and throw to first base,
the catcher must cover third base so that the runner from first base does not advance to third base on the play and this then forces the third baseman to cover home plate. Any failure by the catcher can have dire consequences for their team.
Passed balls are possible whenever one or more runners are on base. A failure to catch a ball thrown from the outfield on a play at home plate, or a failure to tag a runner, means that the defensive team fails to record an all-important out and, instead, it allows a run. On an attempt to prevent a stolen base, a catcher's bad throw might careen past the infielder and skip into the
outfield, allowing an additional advance by the baserunner. Though not exactly a play,
"psyching the batter" refers to a casual attempt by the catcher to distract the batter prior to the pitcher throwing the ball. As long as it does not fall in a lack of sportsmanship, such as offensiveness, and as long as the umpire permits it, the catcher may mention a specific throw or say something funny to try to distract the opponent to cause them to err. ==Personal catcher==