No. 1 / Pitcher Batting Average on Balls in Play / 2021
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Season leader, lower is better
Player stats
Pitcher Batting Average on Balls in Play 2021
Hits allowed on balls in play, excluding home runs. Defense and contact quality affect this measure; it does not isolate a pitcher's skill.
Minimum workload: one inning pitched per game. Completed seasons use the league's scheduled regular-season game count; seasons in progress use team games played. This is a general pitching minimum, not a relief-pitcher qualification rule. Data through December 31, 2021. Data refreshed Sep 12, 2026, 7:39 AM UTC.
- BABIP
- Hits allowed on balls in play, excluding home runs. Defense and contact quality affect this measure; it does not isolate a pitcher's skill.
Understanding Pitcher Batting Average on Balls in Play
Hits allowed on balls in play, excluding home runs. Defense and contact quality affect this measure; it does not isolate a pitcher's skill.
Formula: (H − HR) ÷ (AB − SO − HR + SF)
Read rates alongside playing time. A small sample can produce an extreme result, and a missing value is different from zero.
Season rankings use regular-season records. A player has one combined row across teams; the team label identifies the associated team, not a separate team stint.
Source: MLB statistics and MLBDB derived measures. Formulas describe the measure above. Data refreshed Sep 12, 2026, 7:39 AM UTC.