Baseball scorekeeping
Encyclopedia
Baseball scorekeeping is the practice of recording the details of a baseball
Baseball
Baseball is a bat-and-ball sport played between two teams of nine players each. The aim is to score runs by hitting a thrown ball with a bat and touching a series of four bases arranged at the corners of a ninety-foot diamond...

 game as it unfolds. Professional baseball leagues hire official scorer
Official scorer
In the game of baseball, the official scorer is a person appointed by the league to record the events on the field, and to send the official scoring record of the game back to the league offices...

s to keep an official record of each game (from which a box score
Box score (baseball)
In baseball, the statistical summary of a game is reported in a box score. An abbreviated version of the box score, duplicated from the field scoreboard, is the line 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.

History

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 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)

Scorecards

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


Usually two scorecards (one for each team) are used to score a game. At right is an example of a traditional-style scorecard.

Traditional scorekeeping

Because the traditional method has been in use for so long, it has the most variations in its symbols and syntax. It is difficult, at this point in time, to describe an "authoritative" set of rules for traditional scorekeeping, but what is described here is a representative sample.

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 or scoring a run.

Outs

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. (This is just one of several approaches to scoring a fly out. Normally, the letter 'F' is reserved for foul outs. A fly out would normally be scored simply as '8'.)

  • 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" (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 in another inning, a baserunner is caught stealing second base, the basepath between first and second is filled-in halfway, then ended with a short stroke perpendicular to the basepath. It is then noted CS, with some scorers adding the uniform number or batting position of the batter to indicate when the runner was put out. Then the defensive combination of the put out, normally 2–4 or 2–6 for a catcher-to-second-base play, is written.

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 is written below.
  • If a batter gets a walk, the basepath is drawn and BB (for Base on Balls
    Base on balls
    A base on balls is credited to a batter and against a pitcher in baseball statistics when a batter receives four pitches that the umpire calls balls. It is better known as a walk. The base on balls is defined in Section 2.00 of baseball's Official Rules, and further detail is given in 6.08...

    ) or W (for Walk) is written below. IBB is written for an intentional base on balls
    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...

    . HBP is written for the batter walking because he was hit by a pitch
    Hit by pitch
    In baseball, hit by pitch , or hit batsman , is a batter or his equipment being hit in some part of his body by a pitch from the pitcher.-Official rule:...

    .
  • If the batter reaches first base due to fielder's choice
    Fielder's choice
    In baseball, fielder's choice is a term used to refer 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...

    , 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 is written below.
  • If the batter hits a triple, however, the basepaths from home to first, first to second, and second to third are all drawn, and 3B is written in the upper lefthand corner. This change of position is done to indicate that the runner did not advance on another hit.

Advancing

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 after the 4th batter, number 22, hits a single, either a 4 or 22 could be written in the upper left hand corner.
  • If a runner steals second while the 7th batter, number 32, is up to bat, SB followed by either a 7 or 32 could be written in the upper right hand corner.
  • 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.

Miscellaneous

  • 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.

Example

Using this example scorecard from the August 8, 2000
2000 in baseball
-Major League Baseball:*Regular Season Champions*World Series Champion - New York Yankees*Postseason - October 3 to October 26Click on any series score to link to that series' page....

 game between the Milwaukee Brewers
Milwaukee Brewers
The Milwaukee Brewers are a professional baseball team based in Milwaukee, Wisconsin, currently playing in the Central Division of Major League Baseball's National League...

 and San Francisco Giants
San Francisco Giants
The San Francisco Giants are a Major League Baseball team based in San Francisco, California, playing in the National League West Division....

, the Brewers' 1st inning of play will be examined:
  • The leadoff hitter, #10 Ron Belliard (the Brewers' 2nd baseman) grounds the ball to the Giants' 3rd baseman (5), who fields the ball and throws it to 1st base (3) for the out. Thus 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
      Pitch count
      In baseball statistics, pitch count is the number of pitches thrown by a pitcher in a game.Pitch counts are especially a concern for young pitchers, pitchers recovering from injury, or pitchers who have a history of injuries. The pitcher wants to keep the pitch count low because of his stamina...

       at the time Belliard put the ball into play (3 balls, 2 strikes; a statistic that this particular scorekeeper got tired of keeping track of after the first inning).
    • There are a couple of widely used forms for keeping track of ball and strikes. One of the easiest formats is to use two rows, the first for balls and the second for strikes. As the pitches are delivered a B, S, or F records (respectively) balls, strikes, and two-strike foul balls. (Some pre-printed scoresheets have dedicated boxes that can be checked off for balls and strikes.) In the case of Belliard's at bat, the 3-2 count could have this appearance:
BBB
SSF
  • 2nd (2nd spot or 2nd hole) batter, #9 Marquis Grissom
    Marquis Grissom
    Marquis Deon Grissom is a former Major League Baseball player. He excelled in baseball at Lakeshore High School, under the tutelage of baseball coach Mike Juenger. He currently resides in College Park, Georgia...

     (the Brewers' Center Fielder) on a 2-ball, 2-strike count grounds out 5-3 (3rd baseman to 1st baseman).
  • 3rd batter, #5 Geoff Jenkins
    Geoff Jenkins
    Geoff Jenkins is a former outfielder in Major League Baseball. He previously played for the Milwaukee Brewers from until and the Philadelphia Phillies in 2008...

     (the Brewers' Left Fielder) grounds the ball to the 1st baseman (3) who takes 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" (i.e. advanced a base or bases) by the actions of a hitter behind him, or as is the case in the Giants' first inning by his own subsequent actions. Let's examine the Giants' first inning:
  • Leadoff hitter, #7 Marvin Benard
    Marvin Benard
    Marvin Larry Benard [buh-NARD] is a former Major League Baseball outfielder who batted and threw left-handed....

     (the Giants' Center Fielder) hits a fly ball that is 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
    Bill Mueller
    William Richard Mueller is a former Major League Baseball third baseman. Mueller's playing career was spent with the San Francisco Giants , Chicago Cubs , Boston Red Sox , and Los Angeles Dodgers . He won the American League batting title in 2003, and helped the Red Sox win the 2004 World Series...

     (the Giants' 3rd baseman) hits a single, i.e., he hits the ball into play and makes 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
    Barry Bonds
    Barry Lamar Bonds is an American former Major League Baseball outfielder. Bonds played from 1986 to 2007, for the Pittsburgh Pirates and San Francisco Giants. He is the son of former major league All-Star Bobby Bonds...

     (the Giants' Left Fielder; editor's note: yes, the scorekeeper was aware at the time that Bonds was playing left field, but accidentally put RF on his card) strikes (K) on a 1-ball, 2-strike count (the 1-3 notation was this particular scorekeeper's method of indicating that Bonds struck out "looking", a practice the scorer has now become too lazy to continue). However, at some point during Bonds' at-bat, Bill Mueller, the runner on 1st base, stole 2nd base. His advancement was recorded in "his" cell by writing the notation "SB" next to the upper-right edge of the diamond.
  • 4th batter (clean-up hitter), #21 Jeff Kent
    Jeff Kent
    Jeffrey Franklin Kent is a retired Major League Baseball second baseman. Kent won the National League Most Valuable Player award in 2000 with the San Francisco Giants, and is the all-time leader in home runs among second basemen...

     (the Giants' 2nd baseman) hit a fly ball that was caught by the Brewers' Right Fielder (9) for the 3rd and final out of the inning. Bill 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.

For a more complicated inning, let us examine the bottom half of the 5th inning:
  • 5th batter, #6 J.T. Snow (the #5 hitter in the Giants' lineup) advances to first base on a walk (base-on-balls; BB).
  • 6th batter, #23 Ellis Burks
    Ellis Burks
    Ellis Rena Burks is a former outfielder and designated hitter who played in Major League Baseball for 18 seasons...

     (the Giants' Right Fielder) grounds out 5-3 (3rd baseman to 1st baseman), but in the process, advances J.T. Snow to second base.
  • 7th batter, #25 Rich Aurilia
    Rich Aurilia
    Richard Santo Aurilia is a former Major League Baseball player, mainly as a shortstop. He bats and throws right-handed.The 24th round pick of the Texas Rangers in the 1992 Major League Baseball Draft, Aurilia worked in the Rangers minor league system before being traded with first baseman Desi...

     (the Giants' shortstop) flies out to the center fielder (8) for the second out of the inning.
  • 8th batter, #29 Bobby Estalella (the Giants' catcher) draws a walk (BB) to advance to first base. J.T. Snow remains at 2nd base.
  • 9th batter, #48 Russ Ortiz
    Russ Ortiz
    Russell Reid Ortiz is a retired Major League baseball pitcher. Ortiz played for the Atlanta Braves, Arizona Diamondbacks, Baltimore Orioles, San Francisco Giants, Houston Astros and Los Angeles Dodgers...

     (the Giants' starting pitcher) hits a single (diagonal single line drawn next to the lower-right side of the diamond). J.T. Snow advances to home 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 JT Snow's cell. RBI could have been used, or a circled number representing the number of runs scored by that batter in that at-bat. Some scorecards have a specific place to note RBIs). Bobby Estalella advances 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").
  • Leadoff hitter, Marvin Bernard, up for the third time in this game, draws a walk (BB). Ortiz advances to 2nd base on that walk (the BB written on the "1st to 2nd" portion of the diamond in his "cell".
  • 2nd hitter, Bill Mueller advances to first on fielder's choice (defensive indifference). In this case, Marvin Bernard was "forced out" at 2nd base (surmised because it was the 2nd baseman who made the put-out). But since the shortstop "chose" to get the out at 2nd base instead, it is a Fielder's Choice. Since this was the final out of the inning, no baserunners advanced.

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). The result was a groundbreaking new scorekeeping method.

Scorecard

In addition to the new language introduced by Project Scoresheet, a few major changes were made to the traditional scorecard. Firstly, 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 a lot of 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".

Language

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").

Scorecard

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.

Reisner Scorekeeping is also very fast due to reduced backtracking when notating plays. In the traditional method, if there are two runners on base and the batter hits a single, one must look at previous boxes in the scorecard in order to indicate where the runners went (the scorer may need to go back up to six boxes). There is no such backtracking with the Project Scoresheet system, and the Reisner Scorekeeping system greatly reduces it.

For complete documentation of the Reisner Scorekeeping system please see the official site.
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