Glossary
Read definitions for pitching, fielding, and batting metrics.
Glossary
Last updated: 2026-02-24
This page summarizes major baseball terms used on player pages.
Pitching Stats
| Term | Description |
|---|
| Games Started (GS) | Pitcher who starts the game. |
| Complete Games (CG) | Starter finishes the entire game without relief, even if it ends before 9 innings. |
| Shutouts (SHO) | Complete game with zero runs allowed. |
| No Walks | Outing with zero walks allowed. |
| Wins (W) | Credited to the qualifying winning pitcher in a team win. |
| Losses (L) | Charged to the pitcher responsible for the decisive run. |
| Saves (SV) | Given to a reliever who finishes a win under save conditions. |
| Holds (HLD) | Relief appearance preserving the lead before handing off. |
| Winning Percentage | Wins / (Wins + Losses). |
| Batters Faced (BF) | Total number of batters faced. |
| Innings Pitched (IP) | Outs recorded divided by 3. Example: 7.2 means 7 and 2/3 innings. |
| Hits Allowed (H) | Hits allowed. |
| Home Runs Allowed (HR) | Home runs allowed. |
| Walks Allowed (BB) | Walks issued. |
| Intentional Walks (IBB, Pitcher) | Intentional walks issued by the pitcher. |
| Hit Batters (HBP) | Hit batters. |
| Strikeouts (SO/K) | Batters retired by strikeout. |
| Wild Pitches (WP) | Pitch not ordinarily catchable by the catcher. |
| Balks (BK) | Illegal pitching motion with runners on base. |
| Runs Allowed (R) | Total runs allowed (earned + unearned). |
| Earned Runs (ER) | Runs charged to the pitcher as earned runs. |
| Earned Run Average (ERA) | (ER x 9) / IP. |
| WHIP | (BB + H) / IP. |
Fielding Stats
| Term | Description |
|---|
| Putouts (PO) | Outs completed directly by the fielder. |
| Assists (A) | Plays where the fielder contributes to an out. |
| Errors (E) | Fielding mistakes that allow runners to reach/advance. |
| Double Plays (DP) | Plays producing two or more outs in one sequence. |
| Fielding Percentage (FPCT) | (PO + A) / (PO + A + E). |
Batting Stats
| Term | Description |
|---|
| Plate Appearances (PA) | Total plate appearances. |
| At-Bats (AB) | PA - (BB + HBP + SH + SF + interference). |
| Runs (R) | Times scored. |
| Hits (H) | Total hits. |
| Doubles (2B) | Hit where batter reaches second base. |
| Triples (3B) | Hit where batter reaches third base. |
| Home Runs (HR) | Home runs. |
| Total Bases (TB) | 1Bx1 + 2Bx2 + 3Bx3 + HRx4. |
| Runs Batted In (RBI) | Runs driven in by batting results. |
| Stolen Bases (SB) | Successful steals. |
| Caught Stealing (CS) | Failed steal attempts resulting in outs. |
| Sacrifice Bunts (SH) | Successful sacrifice bunts. |
| Sacrifice Flies (SF) | Successful sacrifice flies. |
| Walks (BB) | Base on balls. |
| Intentional Walks (IBB, Batter) | Intentional walks received. |
| Hit By Pitch (HBP) | Times reached base by hit pitch. |
| Strikeouts (SO/K) | Times struck out. |
| Grounded Into Double Play (GIDP) | Times batter hits into a double play. |
| Batting Average (AVG) | H / AB. |
| On-Base Percentage (OBP) | (H + BB + HBP) / (AB + BB + HBP + SF). |
| Slugging Percentage (SLG) | TB / AB. |
| OPS | OBP + SLG. Summary indicator of offensive production. |
