Caught by spot-checking a real row after the backfill landed: Skubal stored
with one pitch. The pitch-movement endpoint with an empty pitch_type returns
ONE row per pitcher — their primary offering — so 677 rows for ~700 pitchers,
and a five-pitch arsenal was being recorded as a one-pitch one. Not a
fabrication, but a silent under-representation of the single most important
pitcher-mechanism field, which is worse than useless for Layer 2: it would have
classified every pitcher as a one-pitch arm.
Mix now comes from pitch-arsenal-stats (3,205 rows = pitcher x pitch type)
carrying usage%, whiff%, K%, put-away% and run value per 100 for every pitch.
Movement still supplies velo, break and handedness, folded onto the primary
pitch; a pitcher present only in the movement feed keeps his handedness and his
one measured pitch rather than being dropped. Velo on non-primary pitches is
null — absent, not guessed.
Skubal now stores 5 pitches, throws L, FF first by usage with velo 96.7.
Tests 3583 passed / 292 suites.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VCNgGSt5qvcLxaeQqa7Zpj
builtbykev
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