Yahoo! Fantasy Baseball uses the following scoring abbreviations:
Batters:
| Abbreviation | What it Means |
| GP | Games Played |
| GS | Games Started |
| AVG | Batting Average |
| OBP | On-base Percentage |
| SLG | Slugging Percentage |
| AB | At Bats |
| R | Runs |
| H | Hits |
| 1B | Singles |
| 2B | Doubles |
| 3B | Triples |
| HR | Home Runs |
| RBI | Runs Batted In |
| SH | Sacrifice Hits |
| SF | Sacrifice Flys |
| SB | Stolen Bases |
| CS | Caught Stealing |
| BB | Walks |
| IBB | Intentional Walks |
| HBP | Hit By Pitch |
| K | Strikeouts |
| GIDP | Ground Into Double Play |
| OPS | On-base + Slugging Percentage |
| TB | Total Bases |
| PO | Put Outs |
| A | Assists |
| E | Errors |
| FPCT | Fielding Percentage |
| XBH | Extra Base Hits |
| NSB | Net Stolen Bases |
| SB% | Stolen Base Percentage |
| CYC | Hitting for the Cycle |
| PA | Plate Appearances |
| SLAM | Grand Slam Home Runs |
| OFA | Outfield Assists |
| DPT | Double Plays Turned |
| CI | Catcher Interference |
Pitchers:
| Abbreviation | What it Means |
| APP | Appearances |
| GS | Games Started |
| ERA | Earned Run Average |
| WHIP | (Walks + Hits) / Innings Pitched |
| W | Wins |
| L | Losses |
| CG | Completed Games |
| SHO | Shutouts |
| SV | Saves |
| OUT | Outs |
| H | Hits |
| TBF | Total Batters Faced |
| R | Runs |
| ER | Earned Runs |
| HR | Home Runs |
| BB | Walks |
| IBB | Intentional Walks |
| HBP | Hit Batters |
| K | Strikeouts |
| WP | Wild Pitches |
| BLK | Balks |
| SB | Stolen Bases Allowed |
| GIDP | Batters Grounded Into Double Plays |
| SVOP | Save Chances |
| HLD | Holds |
| K/9 | Strikeouts per Nine Innings |
| K/BB | Strikeout to Walk Ratio |
| TB | Total Bases Allowed |
| IP | Innings Pitched |
| PC | Pitch Count |
| 1BA | Singles Allowed |
| 2BA | Doubles Allowed |
| 3BA | Triples Allowed |
| RW | Relief Wins |
| RL | Relief Losses |
| PICK | Pickoffs |
| RAPP | Relief Appearances |
| OBPA | On-base Percentage Against |
| WIN% | Winning Percentage |
| H/9 | Hits Per Nine Innings |
| BB/9 | Walks Per Nine Innings |
| NH | No Hitters |
| PG | Perfect Games |
| IRA | Inherited Runners Allowed |
| QS | Quality Starts |
| BSV | Blown Saves |
| NSV | Net Saves |
| SV% | Save Percentage |
To find out more on how to calculate composite stat categories (Earned Run Average, Batting Average, etc.), please click here.