MLB Stats 101

What are Stats?

Stats are numbers or averages that show how good a player is. In Major League Baseball each player has a set of stats. The stats include batting, fielding, and pitching. Fielders have batting and fielding stats while pitchers have pitching and batting stats.

BATTING STATS:

Each player’s batting stat is charted and the summary looks like this:

  • G – (Games) number of games a player has appeared in
  • AB – (At Bats) number of times a player bats
  • R – (Runs) number of times a batter safely makes it to home plate
  • H – (Hits) number of time a batter hits the ball and safely makes it to base.
  • TB – (Total Bases) the number of bases a batter safely makes it to, and or passes
  • 2B – (Doubles) number of times a batter hits a ball and safely makes it to 2nd base
  • 3B – (Triples) number of times a batter hits a ball and safely makes it to 3rd base
  • HR – (Home Runs) when a batter hits a ball and safely makes it all the way to home plate, this is always when the batter hits the ball over the fence in the back field
  • RBI – (Runners Batted In) number of runners that safely cross home plate because of balls that the batter hits.
  • BB – (Bases on Balls) number of times a batter gets to walk to 1st base, this is when the pitcher throws 4 balls before he throws 3 strikes to the batter, or when the pitcher hits the batter with the ball. Also known as “Walks”
  • IBB – (Intentional Bases on Balls) number of times a pitcher intentionally walks a batter by throwing 4 balls on purpose or hits the player with the ball on purpose
  • SO – (Strike Outs) number of times a batter strikes out, this is when the pitcher throws 3 strikes before he throws 4 balls
  • SB – (Stolen Bases) number of times a runner successfully steals a base
  • CS – (Caught Stealing) number of times a runner is caught trying to steal base and is tagged out
  • BA or AVG – (Batting Average) H divided by AB
  • OBP – (On-Base Percentage) (H+BB+HBP) divided by (AB+BB+HBP+SF)      note: HBP – hits by pitch; SF – sacrifice fly balls
  • SLG – (Slugging Percentage) TB divided by AB
  • OPS – (On-Base Plus Slugging) OBP + SLG
  • GO/AO – (Ground Outs/Air Outs Ratio) the ratio of a batters outs      note: GO- number of ground balls hit that result in an out for the batter; AO – air balls that are hit by the batter and caught by a player to get the batter out

Other batting stats:

  • 1B – (Singles) number of times a batter safely makes it to first base.
  • AB/HR – (At Bats / Home Run) at bats divided by home runs
  • BB/K – (Base on Balls or “Walks” / Strike out Ratio) – the number of base on balls divided by the number of strikeouts equals the ratio of walks-to-strike outs
  • XBH – (Extra Base Hits) –  Add number of doubles (2B) plus triples (3B) plus home runs (HR)
  • FC – (Fielder’s choice) the number of times the runner safely reaches base because the fielder tried for an out of a different runner
  • GDP or GiDP – (Grounded into Double Play) number of times the batter hits a ground ball that becomes a double plays
  • GS – (Grand Slam) number of times the batter hits a home run when the bases are loaded
  • HBP – (Hit by Pitch) the number of times the batter is hit by the pitch and gets a walk to first base
  • K -(Strikeout) number of times a batter strikes out. This is when the batter does not swing at a ball that was thrown in the strike zone, the batter swings and misses, or a foul ball is hit for a total of three times.
  • LOB – (Left On Base) the number of runners left on a base at the end of an inning
  • PA – (Plate Appearance) the number of times the batter makes it to base in any circumstance
  • SH – (Sacrifice Hit) number of time the batter bunts and is thrown out at first, but allows a runner to make it to the next base safely or score at home plate
  • TA or TPA – (Total Average) according to MLB Statistics Glossary, TA is calculated by AB + BB + HBP + SF + SH + number of times reached base on a defensive interference
  • TOB – (Times On Base) the number of times the batter makes it to base from a hit, walk, or a hit-by-pitch.

FIELDING STATS:

Each player’s fielding stat is charted and the summary looks like this:

  • POS – (Position) the position the player plays on the field
  • G – (Games) the number of games the player has played in
  • GS – (Games Started) the number of games the player has started in
  • INN – (Innings at this Position) the number of innings the player has played this position
  • TC – (Total Chances) the number of chances the player gets to make a play with a ball that was hit
  • PO – (Putouts) the number of times the player catches a ball that puts out the batter
  • A – (Assists) the number of times the player catches the ball and throws it to a teammate to get the batter or runner out
  • E – (Errors) the number of times the defensive player, or player on the field, makes a mistake that allows the runner to get to an extra base
  • DP – (Double Plays) the number of times a player on the field gets the ball that was hit and throws it to a teammate that gets a runner out and then throws it to another teammate that gets another runner out.
  • RF – (Range Factors) the sum of (PO+A)*9 divided by INN of that particular POS
  • FP or FPCT – (Fielding Percentage) the effectiveness of a player calculated by (A+PO) divided by TC

Other fielding stats:

  • PB – (Passed Ball) for the catcher, this is when the catcher drops a ball and a runner makes it to the next base or score
  • TP – (Triple Play) the number of times a fielder participates in one play that ends with getting three runners and/or a batter out

PITCHING STATS:

Each player’s pitching stat is charted and the summary looks like this:

  • W – (Wins) the number of times the pitcher’s team gains the lead while the pitcher is pitching and goes on to win the game
  • L – (Loss) the number of times the other team took the lead while the pitcher was pitching, and the other team never lost the lead, and went on to win the game
  • ERA – (Earned Run Average) ER times Innings in a Game divided by Innings Pitched
  • G or GP – (Games Pitched) the total number of games the pitcher has pitched in
  • GS – (Games Started) the total number of games when the pitcher was the starting pitcher for his team
  • CG – (Complete Games) – the number of times the pitcher pitched the whole game
  • SHO – (Shutouts) the number of times the pitcher pitches a complete game and does not allow any runs. When there are two or more pitchers in a game that do not allow any runs, it is not considered a shutout. The pitcher must be the only pitcher in the game for it to be considered a shutout.
  • SV – (Saves) the number or times the pitcher enters the game while his team is ahead and finishes the game with the lead, is not the pitcher that caused the lead or win,  and either (a) entered the game for the last innings when his team was leading with no more than three runs, (b) entered the game with a runner on base, or at bat, or on deck that could tie the game, or (c) or pitches well for at least three innings.
  • SVO – (Save Opportunities) the number of times the pitcher is given the opportunity to save a game for his team
  • IP – (Innings Pitched) the pitcher is only credited for 1/3 inning for each out he gets. So Innings pitched is the total number of out the pitcher got divided that by 3
  • H – (Hits) the number of times batters get a hit from the pitcher’s pitches
  • R – (Runs) the total number of runs scored while the pitcher is in the game, also including the runners that made it to base while the pitcher was in the game and went on to score in that same inning after the pitcher had left
  • ER – (Earned Run) the number of runs the pitcher allows. An earned run from a pitcher includes every time a runner reaches home plate due to a hit, sacrifice bunt, sacrifice fly, stolen base, putout, fielder’s choice, base on balls, hit batter, balk or wild pitch; and does not include the times a runner reaches home plate due to a fielder’s error
  • HR – (Home Runs) the number of times a home run was hit from one of the pitcher’s pitches
  • BB – (Base on Balls) also known as a “Walk”, the number of times a pitcher pitches 4 balls and allows the batter to walk to first base
  • IBB – (Intentional Base on Balls) the number of time the pitcher intentionally pitches 4 balls before 3 strikes and allows the batter to walk to first base
  • SO – (Strikeouts) the number of batters the pitcher gets out by pitching three strikes
  • Avg or BAA – (Batting Average Allowed) the number of hits the batter gets off the pitchers pitches by the total number of the batters at-bats equals the average number of times the batter gets a hit off the pitcher
  • WHIP – (Walks and Hits/Innings Pitched) the number of walks plus the number of hits the pitcher allows divided by the number of innings the pitcher pitched
  • GO/AO – (Ground Ball /Fly Ball Ratio) the pitcher’s GO divided the pitcher’s AO equals the pitcher’s ratio of ground balls to fly balls

Other pitching stats:

  • #P/IP – (# of Pitches/# of Innings Pitched)number of pitches divided by the number of innings the pitcher pitched equals the number of pitches per inning
  • #P/GS – (# of Pitches/Games Started) number of pitches divided by the number of games the pitcher started equals the number of pitches thrown per start
  • #Pit – (# of Pit Pitches) number of pitches thrown in the pit
  • 2B – (Doubles Allowed) number of doubles the pitcher allows
  • 3B – (Triples Allowed) number of triples the pitcher allows
  • AO – (Fly Outs) the number of times a fly out ball is hit from the pitcher’s throw
  • AGS – (Average Game Score) the pitcher’s average game score
  • APP – (Appearance) number of appearances
  • BABIP or BIPA – (Batting Average on Balls In Play) this is the batting average against the pitcher that results in a plate appearance, not including home runs
  • BB/9 – (Bases on Balls per 9 Innings) number of walks or bases on balls allowed by the pitcher divided by the number innings pitched and multiply that by 9
  • BF – (Batters Faced) the total number of batters the pitchers faced
  • BK – (Balk) the number of illegal pitches the pitcher throws and/or any other illegal actions while on the mound
  • BS or BlSv – (Blown Save) number of time the pitcher enters the game in a “save” situation, meaning the pitcher’s team is ahead or winning the game at that time, and the pitcher allows a run that ties the game
  • CGS – (Complete Game Losses) the number of times the pitcher pitched the whole game and his team losses that game
  • CS – (Caught Stealing) the number of time the pitcher catches a runner trying to steal base and gets that runner out
  • G – (Games Pitched) the number of games the player has pitched for
  • GF – (Games Finished) the number of games the pitcher was the final pitcher of his team
  • GIDP – (Grounded into Double Plays) the number of times the pitcher throws a pitch that is grounded and results into a double play.
  • GO – (Ground Outs) the number of times the pitcher throws a ball that is grounded by the batter and is turned into an out by a fielder(s); this does not include bunts
  • GS – (Games Start) the number of games that the player is the first pitcher of his team
  • GSH – (Grand Slams) the number of time the pitcher allows the batter to hit a home run with the bases loaded
  • H/9 – (Hits / Innings) the number of hits the pitcher gets divided by the number of innings the pitcher pitches multiplied by 9 equals the average of hits the pitcher allows per 9 innings.
  • HB – (Hit Batsman) the number of times the pitchers has hit batters with a pitch
  • HLD – (Hold) the number of times the pitcher enters a game in a save situation, gets at least one out, and leaves the game with his team still obtaining the lead
  • I/GS – (Innings/Games Started) take the total number of innings a pitcher pitches when he starts a game and divide that by the number of games the pitchers starts.
  • IR – (Inherited Runners) this is the number of runners already on base when the pitchers enters the game
  • IRA – (Inherited Runs Allowed) the number of runners that were already on base when the pitcher entered the game that made it all the way to home plate safely to score a run
  • K/9 – (Strikeouts per Nine Innings) take the total number of strikeouts the pitchers records and divide that by the total number of innings the pitcher pitches and then multiply that by 9
  • K/BB – (Strikeout/Base on Balls Ratio) take the number of strikeouts the pitcher gets and divide that by the number of walks the pitcher allows
  • LIPS – (Late Inning Pressure Situations) this is the batting average allowed by the pitcher in the 7th inning or later when the other team is leading by 1 run, tied, or has the chance to tie or lead the game with the next runner on base, at bat, or on deck
  • LOP – (Left on Base) the number of runners left on a base when the pitcher gets a batter out
  • MB/9 – (Men on Base per 9 Innings) the number of hits and bases on balls the pitcher allows divided by the number of innings the pitcher pitches and multiply that by 9 to get the number of men on base per 9 innings
  • NP – (Number of Pitches) the number of pitches a pitcher throws
  • OBA – (On-Base Against) add all the number of hits, base on balls, and batters hit by pitches allowed by the pitcher. Then divide that number by the opposing batters’ at-bats, bases on balls, batters hit by pitches, and sacrifice fly balls
  • ORuns – (Opponents Runs) the number of times the opponent team scores a run while the pitcher is pitching.
  • PA – (Plate Appearances) the total number of times the opposing batters safely make it to a base while the pitcher is pitching. This includes all at-bats, bases on balls, batters hit by a pitch, and sacrifice flies.
  • PFR – (Power/Finesse Ratio) the number of strikeouts and walks the pitcher allows divided by the number of innings pitched
  • PIT – (Pitches Thrown) the number of pitches thrown by a pitcher, also called a Pitch Count
  • PK – (Pick-offs) the total number of times a the runner steps off of their original base and is tagged out before he can return while the pitcher is in the game.
  • P/GS – (Pitches/Games Started) the number of pitches a pitcher throws divided by the number of games the pitchers starts
  • P/IP – (Pitches/Innings Pitched) the number of pitches the pitcher throws divided by the number of innings the pitcher pitched
  • RA – (Run Average) the number of runs completed while the pitcher is in the game divided by the number of innings pitched times nine
  • RBI – (Runs Batted In Allowed) the number of runners batted in the pitcher allows
  • RW – (Relief Wins) the number of times the pitcher was not the starting pitcher of the game, and is either credited as the most effective relief pitcher by the scorer judge, or is the pitcher while his team assumes the lead and keeps it till the end of the game
  • SB – (Stolen Bases Allowed) the number of times runners have safely stolen base while the pitcher is pitching
  • SLG – (Slugging Percentage Allowed) the number of times the opposing batter make it to base  while the pitcher is pitching divided by the total number of at-bats the batter has while the pitcher is pitching equals the slugging percentage of the batter while the pitcher is pitching
  • TB – (Total Bases) the total number of times a batter safely makes it to a base while the pitcher is pitching
  • TBF – (Total Batters Faced) the total number of batters the pitcher pitches to
  • TP – (Triple Plays) the total number of triple plays that a cure from a batted ball while the pitcher is in the game
  • UR – (Unearned Run) the number of runs scored that were not earned by the runner’s team but are due to an error or interference on the field
  • WP – (Wild Pitches) the number of times the pitcher throws that pitch that is too high, low, or wide of home plate making it hard for the catcher to field, and allows one or more runners to advance to the next base or score
  • WPCT – (Winning Percentage) the number of wins the pitcher receives divided by the total number of wins and losses the pitcher has
  • XBA – (Extra Base Hits Allowed) all doubles plus triples plus home runs hit against the pitcher

Resources:

http://espn.go.com/mlb/statistics

http://www.baseball-reference.com/bullpen/Baseball_statistics

http://sports.espn.go.com/mlb/news/story?page=stats/glossary

http://mlb.mlb.com/mlb/official_info/baseball_basics/abbreviations.jsp

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