Armside

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Blast% / Blast%

Batter

Blasts as a share of competitive contact. A blast is a squared-up batted ball whose squared-up ratio, capped at 100%, plus its bat speed reaches 164.

Agreement with Savant

Checked nightly. Agreement tolerance: ±4 — in swings, through its numerator blasts; the rate itself is only that count over a count that is also judged (runbook §60).

Pitcher

Blasts allowed as a share of competitive contact against this pitcher. A blast is a squared-up batted ball whose squared-up ratio, capped at 100%, plus its bat speed reaches 164.

Agreement with Savant

Checked nightly. Agreement tolerance: ±4 — in swings, through its numerator blasts; the rate itself is only that count over a count that is also judged (runbook §60).

Shown for: batter and pitcher.

Formula

sum(blasts)::real / NULLIF(sum(comp_contact), 0) — blasts over competitive contact. A blast is a squared-up batted ball with LEAST(ratio, 1.0) × 100 + bat_speed >= 164, the ratio being the squared-up one, capped at 1.

Inputs

Era caveats

Bat tracking begins 2023-07-14

Savant's bat-tracking fields -- bat speed, swing length, attack angle, attack direction and swing tilt -- are on the wire from 2023-07-14. Every bat-tracking column is empty for 2015-2022, 2023 covers the second half of the season only, and a span that starts earlier counts only the swings from that date. Parity is unaffected: Savant's own 2023 boards carry the same partial season, and the six closed season-sides reconcile to the player. (runbook §59)

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