BB%
Walk rate against — share of opposing PA that end in a walk.
What BB% means
Pitcher version of BB%. League average ~8% for pitchers; below 6% is elite, above 10% is concerning.
What counts as a good BB%
Lower is better — roughly .100 is poor, .080 average, .060 good, and .050 or better elite.
Also written
bb_rate_p · pitcher_bb_pct