Testing the claim: “almost all guys with the highest hard-hit rates on the zone matchup have gone yard.” ZM‑HH% = the batter's hard-hit rate by strike-zone cell vs the starter's hand, weighted by where that starter actually locates. Top 25 saved daily, graded from pitch data by MLBAM id. Model zm-1.0 · display v1.4.
Grids are catcher's view. Batter grid = shrunk hard-hit% per zone vs this hand; pitcher grid = his location mix vs this batter's side. Chase = zones 11–14 pooled. Thin badges mean small samples (<40 BBE vs hand, or pitcher fallback to league mix). Saved 11:35a & 4:50p ET; graded overnight.