Baseball statistics include a variety of metrics used to evaluate player and team performance in the sport of baseball.
A base on balls (BB), better known as a walk, occurs in baseball when a batter receives four pitches during a plate appearance that the umpire calls balls, and is in turn awarded first base without the possibility of being called out. The base on balls is defined in Section 2.00 of baseball's Official Rules, and further detail is given in 6.08(a). Despite being known as a "walk", it is considered a faux pas for a professional player to actually walk to first base; the batter-runner and any advancing runners normally jog on such a play.
In baseball statistics, on-base percentage (OBP) measures how frequently a batter reaches base. An official Major League Baseball (MLB) statistic since 1984, it is sometimes referred to as on-base average (OBA), as it is rarely presented as a true percentage.
In baseball, a sacrifice fly is defined by Rule 9.08(d): "Score a sacrifice fly when, before two are out, the batter hits a ball in flight handled by an outfielder or an infielder running in the outfield in fair or foul territory that
- is caught, and a run scores after the catch, or
- is dropped, and a runner scores, if in the scorer's judgment the runner could have scored after the catch had the fly ball been caught."
In baseball, a player is credited with a plate appearance 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 ; 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. A very similar baseball statistic, at bats, counts a subset of plate appearances that end under certain circumstances.
Softball is a popular variation of baseball, the difference being that it is played with a larger ball, on a smaller field, and with only underhand pitches permitted. Softball is played competitively at club levels, the college level, and the professional level. The game was first created in 1887 in Chicago by George Hancock.
A bunt is a batting technique in baseball or fastpitch softball. Official Baseball Rules define a bunt as follows: "A bunt is a batted ball not swung at, but intentionally met with the bat and tapped slowly within the infield." To bunt, the batter loosely holds the bat in front of home plate and intentionally taps the ball into play. A properly executed bunt will create weak contact with the ball and/or strategically direct it, forcing the infielders to make a difficult defensive play to record an out.
In baseball, a sacrifice bunt is a batter's act of deliberately bunting the ball, before there are two outs, in a manner that allows a baserunner to advance to another base. The batter is almost always put out, and hence sacrificed, but sometimes reaches base on an error or fielder's choice. In that situation, if runners still advance bases, it is still scored a sacrifice bunt instead of the error or the fielder's choice. Sometimes the batter may safely reach base by simply outrunning the throw to first; this is not scored as a sacrifice bunt but rather a single.
In baseball, an intentional base on balls, usually referred to as an intentional walk and denoted in baseball scorekeeping by IBB, is a walk issued to a batter by a pitcher with the intent of removing the batter's opportunity to swing at the pitched ball. A pitch that is intentionally thrown far outside the strike zone for this purpose is referred to as an intentional ball.
Extra innings is the extension of a baseball or softball game in order to break a tie.
In baseball statistics, Batters Faced (BF), also known as Total Batters Faced (TBF) or Batters Facing Pitcher (BFP) is the number of batters who made a plate appearance before the pitcher in a game or in a season.
In baseball, the batting order or batting lineup is the sequence in which the members of the offense take their turns in batting against the pitcher. The batting order is the main component of a team's offensive strategy. In Major League Baseball, the batting order is set by the manager, who before the game begins must present the home plate umpire with two copies of his team's lineup card, a card on which a team's starting batting order is recorded. The home plate umpire keeps one copy of the lineup card of each team, and gives the second copy to the opposing manager. Once the home plate umpire gives the lineup cards to the opposing managers, the batting lineup is final and a manager can make changes only under the Official Baseball Rules governing substitutions. If a team bats out of order, it is a violation of baseball's rules and subject to penalty.
Throughout baseball's history, the rules have frequently changed as the game continues to evolve. A few common rules most professional leagues have in common are that four balls are a base on balls, three strikes are a strikeout, and three outs end a half-inning.
In baseball, a cleanup hitter is the fourth hitter in the batting order. The cleanup hitter is traditionally the team's most powerful hitter. His job is to "clean up the bases", that is, drive in base runners.
A box score is a chart used in baseball to present data about player achievement in a particular game. An abbreviated version of the box score, duplicated from the field scoreboard, is the line score. The Baseball Hall of Fame credits Henry Chadwick with the invention of the box score in 1858.
Willy Taveras is a Dominican former professional baseball center fielder in Major League Baseball (MLB). He played a total of seven seasons for the Houston Astros, Colorado Rockies, Cincinnati Reds, and Washington Nationals.
In baseball, a leadoff hitter is a batter who bats first in the lineup. It can also refer to any batter who bats first in any inning.
This is an alphabetical list of selected unofficial and specialized terms, phrases, and other jargon used in baseball, along with their definitions, including illustrative examples for many entries.
In baseball, base running is the act of running from base to base, performed by members of the team at bat.
