What does BB mean in baseball? Walks explained
Read a base on balls without confusing it with a hit or an automatic team run.
Four balls can award first base
MLB calls a walk a base on balls, abbreviated BB. The glossary describes a batter refraining from swinging at four pitches outside the strike zone and being awarded first base.
A walk is not a hit merely because the batter reaches a base. A hypothetical walk with the bases empty adds a runner, not an automatic run to the team score. The player must still advance around the bases to score.
The base situation matters
A bases-loaded walk can force a run in and produce an RBI, as described in MLB's RBI glossary. That scoring effect depends on the occupied bases, not just the BB label.
An intentional walk also counts as a walk for the record. The statistic does not by itself prove the pitcher accidentally lost control or identify the team's tactical reason.
Separate reaching base from scoring
A scorecard may show a walk while the team total remains unchanged. That is normal when no run scores on the play. Conversely, a bases-loaded walk can change the score without increasing the hit count.
Use ScoreZaap's event context beside the runs and hits columns. This guide explains the abbreviation and basic credit, not every strike-zone ruling or a prediction about what a pitcher will throw next. The examples are not claimed live events.