Barrel%
Share of batted balls that qualify as "barrels" — the EV/LA combos that are nearly always extra-base hits.
What Barrel% means
Barrel = exit velo ≥ 98 mph at the optimal launch angle window. League average ~7%; ≥ 12% is elite.
What counts as a good Barrel%
Higher is better — roughly .050 is poor, .070 average, .100 good, and .130 or better elite.
Also written
brl_pct · barrels_per_bbe · barrel_rate · barrel_percent · barrels
Source
Statcast