Official scorer in the context of "Plate appearance"

An official is someone who holds an office (function or mandate, regardless of whether it carries an actual working space with it) in an organization or government and participates in the exercise of authority (either their own or that of their superior or employer, public or legally private). The term officer is close to being a synonym, but it has more military connotations. An elected official is a person who is an official by virtue of an election.

Officials may also be appointed ex officio (by virtue of another office, often in a specified capacity, such as presiding, advisory, secretary). Some official positions may be inherited. A public official is an official of central or local government. A person who currently holds an office is referred to as an incumbent. Used as an adjective, something "official" refers to something endowed with governmental or other authoritative recognition or mandate, as in official language, official gazette, or official scorer.

In the sport of baseball, each of the nine players on a team is assigned a particular fielding position when it is their turn to play defense. Each position conventionally has an associated number, for use in scorekeeping by the official scorer: 1 (pitcher), 2 (catcher), 3 (first baseman), 4 (second baseman), 5 (third baseman), 6 (shortstop), 7 (left fielder), 8 (center fielder), and 9 (right fielder). Collectively, these positions are usually grouped into three groups: the outfield (left field, center field, and right field), the infield (first base, second base, third base, and shortstop), and the battery (pitcher and catcher). Traditionally, players within each group will often be more able to exchange positions easily (that is, a second baseman can usually play shortstop well, and a center fielder can also be expected to play right field); however, the pitcher and catcher are highly specialized positions and rarely will play at other positions.

Baseball scorekeeping is the practice of recording the details of a baseball game as it unfolds. Professional baseball leagues hire official scorers to keep an official record of each game (from which a box score can be generated), but many fans keep score as well for their own enjoyment. Scorekeeping is usually done on a printed scorecard and, while official scorers must adhere precisely to one of the few different scorekeeping notations, most fans exercise some amount of creativity and adopt their own symbols and styles.

In baseball and softball statistics, an error is an act, in the judgment of the official scorer, of a fielder misplaying a ball in a manner that allows a batter or baserunner to advance one or more bases or allows a plate appearance to continue after the batter should have been put out. The term error is sometimes used to refer to the play during which an error was committed.

In baseball, fielder's choice (abbreviated FC) refers to a variety of plays involving an offensive player reaching a base due to the defense's attempt to put out another baserunner, or the defensive team's indifference to his advance. Fielder's choice is not called by the umpires on the field of play; rather, it is recorded by the official scorer to account for the offensive player's advance without crediting him with an offensive statistic such as a hit or stolen base.

Though there are several definitions of fielder's choice, the most common (and the only one commonly referred to as FC) involves a fielder fielding a fair ball and choosing to try to put out another baserunner, thereby allowing the batter-runner to safely reach first base. This could be because the defensive player believes they do not have a reasonable prospect of preventing the batter-runner from reaching first base safely, but is usually because it is typically more beneficial for the defensive team to prevent another baserunner from advancing closer to home plate or scoring a run. If another runner is retired on a force out, the batter will not be rewarded with a hit and will be scored a fielder's choice (FC). Other plays that fall under the definition of FC are usually referred to using other terms such as "defensive indifference" or "on the throw."