| 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, hit by pitch, sacrifice bunt, or sacrifice fly. |
| Batting Average (AVG) | Number of base hits per at bat. Naturally, a higher number is better. Formula: (Base Hits) / (At Bats) |
| Bats (B) | From the pitchers view, which side of the plate the batter stands. |
| Base On Balls (BB) | When a batter is awarded first base as a result of four balls being pitched outside the strike zone. |
| Batters Faced (BF) | Number of batters faced by a pitcher. |
| 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. |
| Intentional Base On Balls (IBB) | When a pitcher intentionally throws four pitches far outside the strike zone to walk the batter. |
| Innings Pitched/Played (INN) | Cumulative number of innings (including fractional innings) pitched/played by a pitcher/fielder. A full inning pitched is 3 outs. A pitcher relieved after one out is represented by .1. After two outs is .2. |
| Losses (L) | Number of games a particular pitcher's performance resulted in a loss. |
| Number (No) | The players number for easy recognition by fans. Generally on the jersey of the player. |
| Opponent Batting Average (OBA) | Percentage of hits against a pitcher. Formula: (Hits) / (Batters Faced) |
| 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) |
| Passed Balls (PB) | Number of times a ball thrown by the pitcher was not handled by a catcher and resulted in a base runner advancing. |
| 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. (Fielding - Number of times a catcher unsuccessfully allows a base runner to steal a base.) |
| Sacrifice Bunts (SacB) | When a bunt results in the current base runner advancing a base and an out for the batter. |
| Sacrifice Flies (SacF) | There must be fewer than 2 outs. The ball must be hit to the outfield. The batter is out - ball is caught on a fly. A runner on base scores on the play and the ball is caught. (The batter gets an RBI. The base runner gets a Run Scored. The Sacrifice Fly is not counted as an official At Bat. The Fielder gets credited with a Put Out.) |
| 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. |
| Throws (T) | Hand in which the player throws the ball while fielding or pitching. |
| 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. |
| Triple Plays (TP) | When one continuing play results in three outs. |
| 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. |
| Year (YEAR) | When the stats were recorded. |