Assists (A)	Number of times a defensive player assisted on an out. Not counted if the play results in an error. Example: Batter hits a ball to the shortstop who throws to first base, where the batter is out. The shortstop gets an assist.
At Bat (AB)	Number of times a player has been up to bat. Not counting the times the plate appearance resulted in a walk, or sacrifice fly.
Batting Average (AVG)	Number of base hits per at bat. Naturally, a higher number is better. Formula: (Base Hits) / (At Bats)
Base On Balls (BB)	When a batter is awarded first base as a result of four balls being pitched outside the strike zone.
Complete Games (CG)	When a starting pitcher records all 27 outs. Game may end in a win or a loss.
Caught Stealing (CS)	A runner is caught stealing when, during an errorless play, he is: thrown out while trying to steal a base picked off a base while trying to advance overslides while stealing and is put out
Doubles (2B)	Number of hits that resulted in the batter reaching second base.
Double Plays (DP)	When one continuing play results in two outs.
Error (E)	When a fielder misplays a ball hit at him, which under normal circumstances would result in an out.
Earned Runs (ER)	Any run that is directly attributable to the pitcher.
Earned Run Average (ERA)	Represents the average number of runs given up by a pitcher during a game if that pitcher pitched all nine innings. Formula: (Earned Runs x 9) / (Innings Pitched)
Fielding Percentage (FLD%)	Number of attempts that resulted in an out compared to the number of total attempts. Formula: (Putouts + Assists) / (Putouts + Assists + Errors)
Games (G)	Number of games the player has played in.
Games Started (GS)	Number of games a player was in the lineup when the first pitch was thrown.
Hits or Hits Against (H)	Number of hits a batter safely reaches a base on not including walks or sacrifices. For pitchers, the number of hits given up while pitching.
Hit By Pitch (HBP)	Number of times a batter is struck by a pitch.
Home Runs (HR)	Number of hits that resulted in a home run.
Innings Pitched (INN)	Cumulative number of innings (including fractional innings) pitched by a pitcher.
Losses (L)	Number of games a particular pitcher's performance resulted in a loss.
On Base Percentage (OBP)	Represents the number of times the player reaches base compared to the number of plate appearances. The higher the number the better. Formula: (Hits + Walks + Times Hit by Pitch) / (At Bats + Walks + Times Hit by Pitch + Sacrifice Flys) Denominator expanded to include sacrifice flys in 1984
Plate Appearances (PA)	Number of plate appearances versus the pitcher. Formula: (AB + SF + SH + BB + Catchers Interference + HBP)
Put Outs (PO)	Number of times a defensive player was the final player in a play, which resulted in an out.
Position (Posn)	Any one of nine available field locations.
Runs (R)	Number of times a batter crosses home plate.
Runs Batted In (RBI)	Number of runners a batter moves across home plate resulting from his hit, walk or sacrifice.
Stolen Bases (SB)	Number of times a base runner successfully advances to the next base without the help of the hitter.
Sacrifices (Sac)	When a sacrifice results in the current base runner advancing a base and an out for the batter.
Shut Outs (SHO)	When a starting pitcher leaves the game without surrendering a run and is given a win for his performance.
Slugging Percentage (SLG)	Total number of bases a batter reaches divided by at bats.
Strike Out (SO)	Number of times a batter swings and misses on three pitches.
Saves (SV)	Number of times a relief pitcher finishes a game where the potential tying or winning run is on base, at home plate or in the on-deck circle. Also the number of times a relief pitcher pitches the final three innings of a win; or the number of times a reliever pitches one inning or more in which he protects a lead of three runs or less.
Save Opportunities (SVO)	Number of times a relief pitcher enters a game in which one of the three situations under the definition of a save presents itself.
Total Bases (TB)	Total number of bases a batter has reached.
Total Chances (TC)	Putouts plus assists plus errors; total chances offered, not total chances accepted.
Team (TEAM)	Team in which the player is currently on or was once a member of.
Triples (TR)	Number of hits that resulted in the batter reaching third base.
Wins (W)	Number of games that resulted in a win for a pitcher or a team.
Wild Pitches (WP)	Number of times a pitcher threw a ball, which was not handled by the catcher and resulted in a base runner advancing.