| Variable | Definition |
|---|---|
| playerID | Unique identifier for a player |
| fg_playerID | FanGraphs identifier for a player |
| POS | Position played |
| inducted | Induction into the Hall of Fame (Y/N) |
| play_era | Era of play |
| GIDP | Grounded into double play |
| GS | Games started |
| InnOuts | Innings played (outs) |
| PO | Putouts |
| A | Assists |
| E | Errors |
| DP | Double plays |
| PB | Passed balls |
| WP | Wild pitches |
| SB_against | Stolen bases allowed (against) |
| CS_for | Caught stealing (for) |
| ZR | Zone Rating |
| Triple Crown | Achieved Triple Crown (Y/N) |
| 500_hr | 500 Home Runs (Y/N) |
| 3000_hit | 3000 Hits (Y/N) |
| 1500_runs | 1500 Runs Scored (Y/N) |
| 1500_rbi | 1500 Runs Batted In (Y/N) |
| 2500_G | 2500 Games Played (Y/N) |
| ped_use | Performance-enhancing drug use (Y/N) |
| Name | Player's name |
| G | Games played |
| AB | At bats |
| PA | Plate appearances |
| H | Hits |
| 1B | Singles |
| 2B | Doubles |
| 3B | Triples |
| HR | Home runs |
| R | Runs scored |
| RBI | Runs batted in |
| BB | Walks |
| IBB | Intentional walks |
| SO | Strikeouts |
| HBP | Hit by pitch |
| SF | Sacrifice flies |
| SH | Sacrifice hits |
| GDP | Grounded into double plays |
| SB | Stolen bases |
| CS | Caught stealing |
| AVG | Batting average |
| BB% | Walk rate (BB/PA) |
| K% | Strikeout rate (SO/PA) |
| BB/K | Walk-to-strikeout ratio (BB/SO) |
| OBP | On-base percentage |
| SLG | Slugging percentage |
| OPS | On-base plus slugging |
| ISO | Isolated power (SLG - AVG) |
| BABIP | Batting average on balls in play |
| wOBA | Weighted on-base average |
| WAR | Wins Above Replacement |
| wRC+ | Weighted Runs Created Plus |
| Spd | Speed Score |
| Def | Defensive runs above average |
| AVG+ | Batting average relative to league average (adjusted) |
| BB%+ | Walk rate relative to league average (adjusted) |
| K%+ | Strikeout rate relative to league average (adjusted) |
| OBP+ | On-base percentage relative to league average (adjusted) |
| SLG+ | Slugging percentage relative to league average (adjusted) |
| ISO+ | Isolated power relative to league average (adjusted) |
| BABIP+ | Batting average on balls in play relative to league average (adjusted) |
| all_star_appearances | Number of All-Star Game appearances |
| num_gold_gloves | Number of Gold Glove Awards |
| num_mvp | Number of MVP Awards |
| num_ws_mvp | Number of World Series MVP Awards |
| silver_slugger | Number of Silver Slugger Awards |
| hank_aaron_award | Number of Hank Aaron Awards |