On-Base Percentage (OBP)

Definition: A statistical measure of how often a batter reaches base per plate appearance. It includes hits, walks, and hit-by-pitches. Rule/Context Note: Calculated as: (H + W + HBP) / (AB + W + HBP + SF) When It Matters: Evaluating offensive value, lineup construction. Interlinks: Plate Appearance • At-Bat • Walk