Baseball scorekeeping

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.[1] 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.[2]

Swingley mpost scorecard black pitchers clean
Traditional-style baseball scorecard.


Sportswriter Henry Chadwick is generally credited as the inventor of baseball scorekeeping. His basic scorecard and notation have evolved significantly since their advent in the 1870s[3] but they remain the basis for most of what has followed.

Abbreviations and grammar

Some symbols and abbreviations are shared by nearly all scorekeeping systems. For example, the position of each player is indicated by a number:

  1. Pitcher (P)
  2. Catcher (C)
  3. First baseman (1B)
  4. Second baseman (2B)
  5. Third baseman (3B)
  6. Shortstop (SS)
  7. Left fielder (LF)
  8. Center fielder (CF)
  9. Right fielder (RF)
  10. Rover or short fielder (used primarily in softball)

The designated hitter (DH), if used, is marked using a zero (0).


Scorecards vary in appearance but almost all share some basic features, including areas for:

  • Recording general game information (date and time, location, teams, etc.)
  • Listing the batting lineup (with player positions and uniform numbers)
  • Recording the play-by-play action (usually the majority of the scorecard)
  • Tallying each player's total at-bats, hits, runs, etc. at the end of the game
  • Listing the pitchers in the game, including their statistics, such as innings pitched, strikeouts, earned runs, and bases on balls

Usually two scorecards (one for each team) are used to score a game.

Traditional scorekeeping

Scorecard for first ever MLB perfect game, by Lee Richmond, 1880. Abbreviations: A, B, C, for first, second and third, P and H for pitcher and catcher, S for shortstop, L, M, and R for left, center, and right field

There is no authoritative set of rules for scorekeeping. The traditional method has many variations in its symbols and syntax, but this is a typical example.

In the traditional method, each cell in the main area of the scoresheet represents the "lifetime" of an offensive player, from at-bat, to baserunner, to being put out, scoring a run, or being left on base.


When an out is recorded, the combination of defensive players executing that out is recorded. For example:

  • If a batter hits a ball on the ground to the shortstop, who throws the ball to the first baseman to force the first out, it would be noted on the scoresheet as 6–3, with 6 for the shortstop and 3 for the first baseman.
  • If the next batter hits a ball to the center fielder who catches it on the fly for the second out, it would be noted as F8, with F for flyout and 8 for the center fielder. (In some systems, the letter 'F' is reserved for foul outs. A fly out would therefore be scored simply as '8'.) Other systems append a lower-case "ƒ" for foul balls, as in F9ƒ
A vertically reflected K is the standard notation for a strikeout looking.
  • If the following batter strikes out, it would be noted as K, with the K being the standard notation for a strikeout. If the batter did not swing at the third strike, a "backwards K" (K, see right) is traditionally used. Other forms include "Kc" for a called third strike with no swing, or "Ks" if the batter did swing. A slash should be drawn across the lower right corner to indicate the end of the inning.
  • If a runner is put out while on base, the next basepath is filled-in halfway, then ended with a short stroke perpendicular to the basepath. A notation is then added to indicate how the runner was out, along with the defensive combination that resulted in the out:
    • CS means the runner was caught trying to steal the base ahead. The notation for a runner caught trying to steal second is normally 2–4 or 2–6 for a catcher-to-second-base play.
    • PO means the runner was picked off by the pitcher while he was off the base. This almost always occurs at first base, so the notation is usually 1–3.
    • DP or TP means the runner was out as part of a double or triple play. Usually, the full notation is left on the batter's line (the last out of the play); 6–4–3, 4–6–3, and 5–4–3 are common double-play sequences.
    • FC means the out was the result of a fielder's choice to get out the runner on base rather than force out the batter. This can also be indicative of an unsuccessful attempt at a double or triple play as such a move is often the first move to make such a play.

Reaching base

If a batter reaches first base, either due to a walk, a hit, or an error, the basepath from home to first base is drawn, and the method described in the lower-righthand corner. For example:

  • If a batter gets a base hit, the basepath is drawn and 1B (for a single-base hit) is written below.
  • If the batter hits a double, however, the basepaths from home to first and first to second are drawn, and 2B is written above. This change of position is done to indicate that the runner did not advance on another hit. If the batter hits a triple, the basepaths are drawn from home to first to second to third and 3B is written in the upper lefthand corner for the same reason.
  • If a batter gets a walk, the basepath is drawn and BB (for Base on Balls) or W (for Walk) is written below. IBB is written for an intentional base on balls. Other indicators may be used if the batter is awarded first base for other reasons (HBP for being hit by a pitch, CI for catcher's interference, etc.).
  • If the batter reaches first base due to fielder's choice (ex. the shortstop decides to force out the runner heading to second instead), the basepath is drawn and FC is written along with the sequence of the defense's handling of the ball, e.g., 6–4.
  • If the batter reaches base because the first baseman dropped the throw from the shortstop, the basepath is drawn and E3 (an error committed by the first baseman) is written below.
  • If a batter gets a base hit then in the same play advances due to a fielding error by the second baseman (ex. he misses the throw from the outfield, allowing the ball to get away), these are written as two events. First, the path to first is drawn with a 1B noted as for a single, then the path to second is drawn with an E4 noted above. This correctly describes the scoring—a single plus an error.


When a runner advances due to a following batter, it can be noted by the batting position or the uniform number of the batter that advanced the runner. This kind of information is not always included by amateur scorers, and there is a lot of variation in notation. For example:

  • If a runner on first is advanced to third base due to action from the 4th batter, number 22, the paths from first to second to third are drawn in and either a 4 or 22 could be written in the upper left hand corner. Whether that action was a base hit or a sacrifice will be noted on the batter's annotation.
  • If a runner steals second while the 7th batter, number 32, is up to bat, the path from first to second would be drawn and SB followed by either a 7 or 32 could be written in the upper right hand corner. Note that Defensive Indifference (no attempt to throw out the runner) is denoted differently from a Stolen Base.
  • For a batter to be credited with advancing the runner, the base advance must be the result of the batter's action. If a runner advances beyond that due to an error (such as a bad catch) or a fielder's choice (such as a throw to tag out a runner ahead of him), the advance due to the batter's action and the advance due to the other action are noted separately.
  • To advance a player home to score a run, a runner must touch all 4 bases and cross all four base paths, therefore the scorer draws a complete diamond and, usually, fills it in. However, some scorers only fill in the diamond on a home run; they might then place a small dot in the center of the diamond to indicate a run scored but not a home run. The player that bats the runner home (or the other event such as an error that allows the runner to reach home) is noted in the lower left hand corner.


  • End of an inning – When the offensive team has made three outs, a slash is drawn diagonally across the lower right corner of the cell of the third out. After each half-inning, the total number of hits and runs can be noted at the bottom of the column. After the game, totals can be added up for each team and each batter.
  • Extra innings – There are extra columns on a scoresheet that can be used if a game goes to extra innings, but if a game requires more columns, another scorecard will be needed for each team.
  • Substitutions – When a substitution is made, a vertical line is drawn after the last at-bat for previous player, and the new player's name and number is written in the second line of the Player Information section. A notation of PH or PR should be made for pinch hit and pinch run situations.
  • Batting around – After the ninth batter has batted, the record of the first batter should be noted in the same column. However, if more than nine batters bat in a single inning, the next column will be needed. Draw a diagonal line across the lower left hand corner, to indicate that the original column is being extended.


Sample baseball scorecard from a game scored on August 8, 2000 at (then) Pacific Bell Park.

The scorecard on the right describes the August 8, 2000 game between the Milwaukee Brewers and San Francisco Giants, played at Pacific Bell Park, in San Francisco.[4] The scorecard describes the following events in the top of the 1st inning:

  • 1st Batter, #10 Ronnie Belliard (the Brewers' 2nd baseman) grounded the ball to the Giants' 3rd baseman (5), who fielded the ball and threw it to 1st base (3) for the out. The play is recorded as "5-3."
    • The notation ("3-2") in the lower right corner of the "Belliard:Inning 1 cell" indicates the pitch count at the time Belliard put the ball into play (3 balls and 2 strikes).
  • 2nd batter, #9 Marquis Grissom (the Brewers' center fielder) grounded out 5-3 (3rd baseman to 1st baseman) on a 2-ball, 2-strike count.
  • 3rd batter, #5 Geoff Jenkins (the Brewers' left fielder) grounded the ball to the 1st baseman (3) who took the ball to the base himself for an unassisted put out (3U).

One hard and fast rule of baseball scorekeeping is that every out and every time a baserunner advances must be recorded. The scoring can get a little more complicated when a batter who has reached base, is then "moved up" (advances one or more bases) by his own actions or by the actions of a hitter behind him. This is demonstrated in the Giants' first inning:

  • 1st Batter, #7 Marvin Benard (the Giants' center fielder) hit a fly ball that was caught by the right fielder (9) for an out. Other scorekeepers might abbreviate this out using "F9" for fly out to right field.
  • 2nd batter, #32 Bill Mueller (the Giants' 3rd baseman) hit a single: he hit the ball into play and made it safely to first base. This is denoted by the single line running from "home" to "1st" next to the diamond in that cell. Commonly, scorekeepers will place some abbreviation, such as "1B-7", to designate a single hit to left field. In addition, many scorekeepers also place a line across the diamond to show the actual path of the baseball on the field.
  • 3rd batter, #25 Barry Bonds (the Giants' left fielder, incorrectly noted as a right fielder ("RF") on this scorecard) struck out (K) on a 1-ball, 2-strike count. At some point during Bonds' at-bat, Mueller, the runner on 1st base, stole 2nd base. This advancement was recorded in Mueller's cell by writing the notation "SB" next to the upper-right edge of the diamond.
  • 4th batter, #21 Jeff Kent (the Giants' 2nd baseman) hit a fly ball that was caught by the Brewers' right fielder (9) for the third and final out of the inning. Mueller was stranded on 2nd base.

Stranded baserunners might be notated as being "LOB" (Left On Base) for that inning, with a number from 1-3 likely at the bottom of the inning column. For example, if two runners are left on base after the 3rd out, the scorekeeper might note "LOB:2", then at the end of the game calculate a total number of LOB for the game.

A more complicated example of scorekeeping is the record of the bottom of the 5th inning:

  • 1st batter, #6 J. T. Snow (the Giants' 1st baseman and the fifth hitter in the Giants' lineup) advanced to first base on a walk (base-on-balls; BB).
  • 2nd batter, #23 Ellis Burks (the Giants' right fielder) grounded out 5-3 (3rd baseman to 1st baseman). In the process, Snow advanced to second base.
  • 3rd batter, #25 Rich Aurilia (the Giants' shortstop) flied out to the center fielder (8) for the second out of the inning.
  • 4th batter, #29 Bobby Estalella (the Giants' catcher) drew a walk (BB) to advance to first base. Snow remained at 2nd base.
  • 5th batter, #48 Russ Ortiz (the Giants' starting pitcher) hit a single (diagonal single line drawn next to the lower-right side of the diamond). Snow advanced to home plate on that single (the diagonal line drawn next to the lower left side of the diamond in Snow's "cell") to score the game's only run. Ortiz is given credit for an RBI (run batted in), denoted by the "R" written in the bottom left corner of his cell (incorrectly, since "R" indicates a 'run scored' and would more appropriately been noted in Snow's cell; "RBI" should have been written in Ortiz's cell). Estalella advanced from 1st to 3rd base on Ortiz's single (the diagonal line drawn next to the upper left side of the diamond in Estalella's "cell").
  • 6th batter Marvin Bernard, up for the third time in this game, drew a walk (BB). Ortiz advanced to 2nd base on that walk (indicated by "BB" written on the "1st to 2nd" portion of the diamond in his cell.
  • 7th batter Bill Mueller hit a ground ball to the 3rd baseman (5), who then threw the ball to the 2nd baseman (4) to force out Bernard at 2nd base (6-4) for the third and final out of the inning. As a force out also could have been performed by throwing the ball to 1st base, this is scored as a fielder's choice ("FC").

Project Scoresheet

Project Scoresheet was an organization run by volunteers in the 1980s for the purpose of collecting baseball game data and making it freely available to the public (the data collected by Major League Baseball was and still is not freely available). To collect and distribute the data, Project Scoresheet needed a method of keeping score that could be easily input to a computer. This limited the language to letters, numbers, and punctuation (no baseball diamonds or other symbols not found on a computer keyboard).


In addition to the new language introduced by Project Scoresheet, a few major changes were made to the traditional scorecard. First, innings of play are not recorded in a one-per-column fashion; instead all boxes are used sequentially and new innings are indicated with a heavy horizontal line. This saves considerable space on the card (since no boxes are left blank) and reduces the likelihood of a game requiring a second set of scorecards.

The second major change is the detailed offensive and defensive in/out system, which allows the scorekeeper to specify very specifically when players enter and leave the game. This is vital for attributing events to the proper players.

Lastly, each "event box" on a Project Scoresheet scorecard is broken down into three sections: before the play, during the play, and after the play. All events are put into one of these three slots. For example, a stolen base happens "before the play" because it occurs before the batter's at-bat is over. A hit is considered "during the play" because it ends the batter's plate appearance, and baserunner movement subsequent to the batter's activity is considered "after the play".


The language developed by Project Scoresheet can be used to record trajectories and locations of batted balls and every defensive player who touched the ball, in addition to the basic information recorded by the traditional method. Here are some examples:

In the "before the play" slot:

  • CS2(26): runner caught stealing 2B (catcher to shortstop)
  • 1-2/SB: runner on 1B steals 2B

In "during the play" slot:

  • 53: ground-out to third baseman ("5-3" in the traditional system)
  • E5/TH1: error on the third baseman (on his throw to 1B)

In the "after the play" slot:

  • 2-H: runner on 2B advances to home (scores)
  • 1XH(92): runner on 1B thrown out going home (right fielder to catcher)

For a complete description of the language and the scorecard please see David Cortesi's documentation.

Reisner Scorekeeping

Project Scoresheet addressed a lack of precision in the traditional scorekeeping method, and introduced several new features to the scorecard. But while the Project Scoresheet language continues to be the baseball research community's standard for storing play-by-play game data in computers, the scorecards it yields are difficult to read due to the backtracking required to reconstruct a mid-inning play. Hence, despite its historical importance, the system has never gained favor with casual fans.

In 2002 Alex Reisner developed a new scorekeeping method that took the language of Project Scoresheet but redefined the way the event boxes on the scorecard worked, virtually eliminating the backtracking required by both Project Scoresheet and the traditional method. The system also makes it easy to reconstruct any mid-inning situation, a difficult task with the other two systems (for this reason it was originally promoted as "Situational Scorekeeping").


A Reisner scorecard looks like a cross between a traditional and Project Scoresheet scorecard. It has a diamond (representing the field, as in the traditional system) and a single line for recording action during and after the play (like Project Scoresheet's second and third lines). The diamond in each event box is used to show which bases are occupied by which players at the start of an at-bat. Stolen bases, pickoffs, and other "before the play" events are also marked on the diamond, so that one can see the "situation" in which an at-bat took place by simply glancing at the scorecard.


  1. ^ "Keeping score". Archived from the original on 2005-07-01. Retrieved 2017-08-07.
  2. ^ "Ways to get on base". Archived from the original on 2009-12-12. Retrieved 2017-08-07.
  3. ^ Dickson, Paul. The Joy of Keeping Score. New York: Walker. ISBN 0-15-600516-6.
  4. ^ "Milwaukee Brewers at San Francisco Giants, August 8, 2000". Baseball Reference. Retrieved 29 April 2013.

2 (two) is a number, numeral, and glyph. It is the natural number following 1 and preceding 3.

Baseball positions

Baseball is a bat-and-ball game played between two opposing teams who take turns batting and fielding. Within the game there are positions in which each player can play in.

There are nine fielding positions in baseball. Each position conventionally has an associated number, which is used to score putouts:

1 (pitcher), 2 (catcher), 3 (first baseman), 4 (second baseman), 5 (third baseman), 6 (shortstop), 7 (left fielder) also, less commonly known as left outfield, 8 (center fielder), and 9 (right fielder).For example:

If the third baseman fields a ball and throws it to first, it is recorded as a 5-3 out.

A double play where the second baseman fields, throws to the shortstop covering second base, who throws to the first baseman, is recorded as a 4-6-3 double play. This is not the only way to make a double play.


Catcher is a position for a baseball or softball player. When a batter takes his/her turn to hit, the catcher crouches behind home plate, in front of the (home) umpire, and receives the ball from the pitcher. In addition to this primary duty, the catcher is also called upon to master many other skills in order to field the position well. The role of the catcher is similar to that of the wicket-keeper in cricket, but in cricket, wicketkeepers are increasingly known for their batting abilities.

Positioned behind home plate, the catcher can see the whole field, and is therefore in the best position to direct and lead the other players in a defensive play. The catcher typically calls for pitches using hand signals. The calls are based on the pitcher's mechanics and strengths, as well as the batter's tendencies and weaknesses. Foul tips, bouncing balls in the dirt, and contact with runners during plays at the plate are all events to be handled by the catcher, necessitating the use of protective equipment. This includes a mask, chest and throat protectors, shin guards, and a heavily padded catcher's mitt.

Because the position requires a comprehensive understanding of the game's strategies, the pool of former catchers yields a disproportionate number of managers in both Major League Baseball and Minor League Baseball, including such prominent examples as Connie Mack, Steve O'Neill, Al López, Mike Scioscia, and Joe Torre. The physical and mental demands of being involved on every defensive play can wear catchers down over a long season, and can have a negative effect on their offensive output.Because of the strategic defensive importance of catching, if a catcher has exceptional defensive skills, teams are often willing to overlook their relative offensive weaknesses. A knowledgeable catcher's ability to work with the pitcher, via pitch selection and location, can diminish the effectiveness of the opposing team's offense. Many great defensive catchers toiled in relative anonymity, because they did not produce large offensive numbers. Notable examples of light-hitting, defensive specialists were Ray Schalk, Jim Hegan, Jim Sundberg and Brad Ausmus. Schalk's career batting average of .253 is the lowest of any position player in the Baseball Hall of Fame. That he was selected for enshrinement in 1955 was largely a tribute to his outstanding defensive skills.In the numbering system used to record baseball plays, the catcher is assigned the number '2'. (See Baseball scorekeeping.)

Circle K

Circle K Stores Inc. is a Canadian multinational chain of convenience stores. Founded in 1951 in El Paso, Texas, the company filed for bankruptcy protection in 1990 and went through several owners, before being acquired by its current owner, Alimentation Couche-Tard, in 2003. It is present in most of the 50 U.S. states and is franchised in Asia and Latin America.

In 2015, Circle K unveiled a new logo and brand identity, and Couche-Tard announced that it would deploy the brand in English-speaking Canada (in parallel with, and in some cases rebranded from the Mac's chain), and in Europe to replace Statoil.


E9 or E-9 may refer to:

BMW E9, a two-door coupé built for BMW by Karmann from 1968 to 1975

E9 (countries) a forum of nine highly populated countries

E9 (Lie algebra) (E9), another name for the infinite dimensional affine Lie algebra

E9 tuning, a common tuning for steel guitar necks of more than six strings

E9, a baseball scorekeeping abbreviation for an error on the right fielder

EMD E9, a diesel locomotive

European route E09

European walking route E9

E9, a postcode district in the E postcode area of the London postal district

E9, the Besraya Expressway in Malaysia

Boston-Maine Airways IATA code

E-9A Widget, U.S. Air Force range control aircraft

E-9, a U.S. uniformed services pay grade

Elite 9 Hockey League, a youth hockey league in New England

Kyoto Jūkan Expressway, San'in Kinki Expressway and San'in Expressway, route E9 in Japan

Elias Sports Bureau

The Elias Sports Bureau (ESB) is a company providing historical and current statistical information for sports, especially for major professional sports leagues in the United States and Canada.

Generation K (baseball)

Generation K were a baseball trio of young starting pitchers in the New York Mets organization in 1995, consisting of Bill Pulsipher, Jason Isringhausen, and Paul Wilson. Generation X was a hot topic in American media during the mid-1990s and the nickname came from the use of K to denote a strikeout in baseball scorekeeping. The trio were highly regarded and were expected to lead the club back to the top of the National League East standings for the first time since the end of the Dwight Gooden/Darryl Strawberry era. The prospect of their success drew comparisons to past Mets pitching stars such as Seaver/ Koosman/ Matlack and Gooden/ Darling/ Fernandez. All three players succumbed to pitching-related injuries within a year, and eventually only Isringhausen would have a productive major-league career, primarily as a closer for the Oakland Athletics and St. Louis Cardinals.

Henry Chadwick (writer)

Henry Chadwick (October 5, 1824 – April 20, 1908) was an English-American sportswriter, baseball statistician and historian, often called the "Father of Baseball" for his early reporting on and contributions to the development of the game. He edited the first baseball guide that was sold to the public. He is credited with creating box scores, as well as creating the abbreviation "K" that designates a strikeout. He is said to have created the statistics of batting average and earned run average (ERA). He was posthumously inducted into the National Baseball Hall of Fame.

Intentional base on balls

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.

Beginning with the 2017 season, Major League Baseball has removed the requirement to throw four intentional balls. In MLB and in amateur baseball, such as high school and college games, and in most levels of Little League Baseball, the manager of the team on the field now simply asks the plate umpire to let the batter go to first base.

List of Major League Baseball career fielding errors as an outfielder leaders

In baseball 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 an at bat to continue after the batter should have been put out.

An outfielder is a person playing in one of the three defensive positions in baseball, farthest from the batter. These defenders are the left fielder, the center fielder, and the right fielder. An outfielder's duty is to try to catch long fly balls before they hit the ground or to quickly catch or retrieve and return to the infield any other balls entering the outfield. Outfielders normally play behind the six other members of the defense who play in or near the infield. By convention, each of the nine defensive positions in baseball is numbered. The outfield positions are 7 (left field), 8 (center field) and 9 (right field). These numbers are shorthand designations useful in baseball scorekeeping and are not necessarily the same as the squad numbers worn on player uniforms.

Tom Brown is the all-time leader in errors committed by an outfielder with 492 career. Brown is the only outfielder to commit more than 400 career errors. Dummy Hoy (394), Paul Hines (385), Jesse Burkett (383), George Gore (368), Jimmy Ryan (366), George Van Haltren (358), and Ned Hanlon (350) are the only other outfielders to commit more than 300 career errors.

List of Major League Baseball career intentional bases on balls leaders

In baseball, an intentional base on balls, usually referred to as an intentional walk and denoted in baseball scorekeeping by IBB, is a base on balls (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.

Barry Bonds is the all-time leader in intentional bases on balls with 688 career. Bonds is the only player to be intentionally walked more than 400 times. Albert Pujols is second all time and the active leader with 311 career intentional bases on balls and the only other player to be intentionally walked over 300 times.

List of Major League Baseball career putouts as an outfielder leaders

In baseball statistics, a putout (denoted by PO or fly out when appropriate) is given to a defensive player who records an out by tagging a runner with the ball when he is not touching a base (a tagout), catching a batted or thrown ball and tagging a base to put out a batter or runner (a force out), catching a thrown ball and tagging a base to record an out on an appeal play, catching a third strike (a strikeout), catching a batted ball on the fly (a flyout), or being positioned closest to a runner called out for interference.

An outfielder is a person playing in one of the three defensive positions in baseball, farthest from the batter. These defenders are the left fielder, the center fielder, and the right fielder. An outfielder's duty is to try to catch long fly balls before they hit the ground or to quickly catch or retrieve and return to the infield any other balls entering the outfield. Outfielders normally play behind the six other members of the defense who play in or near the infield. By convention, each of the nine defensive positions in baseball is numbered. The outfield positions are 7 (left field), 8 (center field) and 9 (right field). These numbers are shorthand designations useful in baseball scorekeeping and are not necessarily the same as the squad numbers worn on player uniforms.

Willie Mays is the all-time leader in putouts as an outfielder with 7,095 career. Mays is the only outfielder to record more than 7,000 career putouts. Tris Speaker (6,788), Rickey Henderson (6,468), Max Carey (6,363), Ty Cobb (6,361), and Richie Ashburn (6,089) are the only other outfielders to record more than 6,000 career putouts.


In linguistics and semiotics, a notation is a system of graphics or symbols, characters and abbreviated expressions, used (for example) in artistic and scientific disciplines to represent technical facts and quantities by convention. Therefore, a notation is a collection of related symbols that are each given an arbitrary meaning, created to facilitate structured communication within a domain knowledge or field of study.

Standard notations refer to general agreements in the way things are written or denoted. The term is generally used in technical and scientific areas of study like mathematics, physics, chemistry and biology, but can also be seen in areas like business, economics and music.

Orel Hershiser's scoreless innings streak

During the 1988 Major League Baseball season, pitcher Orel Hershiser of the Los Angeles Dodgers set the MLB record for consecutive scoreless innings pitched. Over 59 consecutive innings, opposing hitters did not score a run against Hershiser. During the streak, he averted numerous high-risk scoring situations. The streak spanned from the sixth inning of an August 30 game against the Montreal Expos to the tenth inning of a September 28 game against the San Diego Padres. The previous record of ​58 2⁄3 innings was set by former Dodger pitcher Don Drysdale in 1968; as the team's radio announcer, Drysdale called Hershiser's streak as he pursued the new record. Pundits have described the streak as among the greatest individual feats in sports and among the greatest records in baseball history.

During the streak, the Elias Sports Bureau changed its criteria for the official consecutive scoreless innings record for starting pitchers from including fractional innings in which one or two outs had been recorded to counting only complete scoreless innings. Since the streak was active at the end of the 1988 season, it would have spanned two separate seasons if Hershiser had pitched any additional scoreless innings to begin the next year. However, he yielded a run in his first inning of work in the 1989 season against the Cincinnati Reds, thus ending the streak. The streak only includes innings pitched in the regular season, excluding eight scoreless innings Hershiser pitched to start Game 1 of the 1988 National League Championship Series on October 4 (unofficially extending his streak to 67 combined innings). Although he completed the ninth inning in each start, the streak's final game lasted 16 innings, of which he only pitched the first ten. Thus, Hershiser did not match Drysdale's record of six consecutive complete game shutouts. Like Drysdale's streak, the penultimate game of Hershiser's streak was a Dodgers–Giants game that featured a controversial umpire's ruling that saved the streak.

The streak was initially overshadowed by Hershiser achieving 20 wins and the race for the NL Cy Young Award between Hershiser and Danny Jackson until Hershiser reached 40 consecutive innings. Another distraction during the streak was his wife's pregnancy and his son's childbirth complications. The record-setting game was overshadowed by the 1988 Summer Olympics, football, and baseball pennant races; it was not broadcast on local television in Los Angeles. Following the regular season, Hershiser was awarded the NL Cy Young Award. In the playoffs, he earned both the NL Championship Series Most Valuable Player Award and the World Series MVP Award. He also secured Sportsman of the Year and Associated Press Athlete of the Year honors. Hershiser appeared in the 1989 MLB All-Star Game and continued to be an effective pitcher for many seasons, including two additional appearances in the World Series, one of which was preceded by his winning the 1995 AL Championship Series MVP Award.


An outfielder is a person playing in one of the three defensive positions in baseball or softball, farthest from the batter. These defenders are the left fielder, the center fielder, and the right fielder. As an outfielder, their duty is to catch fly balls and/ ground balls then to return them to the infield for the out or before the runner advances, if there is any runners on the bases. As an outfielder, they normally play behind the six players located in the field.

By convention, each of the nine defensive positions in baseball is numbered. The outfield positions are 7 (left field), 8 (center field) and 9 (right field). These numbers are shorthand designations useful in baseball scorekeeping and are not necessarily the same as the squad numbers worn on player uniforms.

Outfielders named to the MLB All-Century Team are Hank Aaron, Ty Cobb, Joe DiMaggio, Mickey Mantle, Willie Mays, Stan Musial, Pete Rose, Babe Ruth, Ted Williams and Ken Griffey Jr.

Slugging percentage

In baseball statistics, slugging percentage (SLG) is a measure of the batting productivity of a hitter. It is calculated as total bases divided by at bats, through the following formula, where AB is the number of at bats for a given player, and 1B, 2B, 3B, and HR are the number of singles, doubles, triples, and home runs, respectively:

Unlike batting average, slugging percentage gives more weight to extra-base hits such as doubles and home runs, relative to singles. Walks are specifically excluded from this calculation, as a plate appearance that ends in a walk is not counted as an at bat.

The name is a misnomer, as the statistic is not a percentage but a scale of measure whose computed value is a number from 0 to 4. The statistic gives a double twice the value of a single, a triple three times the value, and a home run four times.

A slugging percentage is always expressed as a decimal to three decimal places, and is generally spoken as if multiplied by 1000. For example, a slugging percentage of .589 would be spoken as "five eighty nine."

In 2018, the mean average SLG among all teams in Major League Baseball was .409.


In baseball or softball, a strikeout (or strike-out) occurs when a batter racks up three strikes during a time at bat. It usually means the batter is out. A strikeout is a statistic recorded for both pitchers and batters, and is denoted by K. A "strikeout looking" — in which the batter does not swing and the third strike is called by the umpire — is usually denoted by a ꓘ.Although a strikeout suggests that the pitcher dominated the batter, the free-swinging style that generates home runs also leaves batters susceptible to striking out. Some of the greatest home run hitters of all time – such as Alex Rodriguez, Reggie Jackson, and Sammy Sosa – were notorious for striking out.

Baseball concepts
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