Barrels / Barrels
Batter
Barrels: batted balls in the exit-velocity and launch-angle combination Savant classifies as launch_speed_angle = 6. A count, not a share — Barrel% divides this by balls in play.
Agreement with Savant
Checked nightly. Agreement tolerance: ±0.
Pitcher
Barrels allowed: batted balls against in the exit-velocity and launch-angle combination Savant classifies as launch_speed_angle = 6. A count, not a share.
Agreement with Savant
Checked nightly. Agreement tolerance: ±0.
Shown for: batter and pitcher.
Formula
sum(barrel)::int — a count of batted balls Savant classifies as barrels (launch_speed_angle = 6). barrel_pct is the same numerator as a share of bip.
Inputs
plate_appearances.barrel
Era caveats
Bunts leave the averages but stay in these denominators
Savant's bunt handling is asymmetric, and matching the asymmetry is what makes these rates reconcile. Bunts are dropped from the exit-velocity and launch-angle averages, but they remain in bip, the denominator barrel_pct and hardhit_pct both divide by. Measured on 2025: barrel_pct = barrels/bip reconciles 251 of 251 qualified batters, while barrels/bbe manages 182 and barrels/(bip minus bunts) only 115. (runbook §16)
Three tracking systems across the seasons shown
Rows carry a tracking_era of trackman, hawkeye or hawkeye_bat (migration 001). The systems differ in what they measure and how precisely, so long spans cross a measurement boundary as well as a rule one.
Version history
- 2026-08-29 — Surfaced as its own parity-checked count, compared by integer equality rather than through the rate's rounding: it and hardhit are the leaderboard's own stored columns, not quantities Savant derives from them. (runbook §49)