The Comp Constellation

Profile-shape similarity over six weighted feature groups, standardized within this season's 256 qualified hitters (340+ PA). Closer to the center star = more alike. xwOBA is deliberately excluded: this maps how hitters are built, not results twins.

strong match (0.55+) moderate (0.45 to 0.55) weaker (< 0.45) star size + line weight scale with similarity · rings mark 0.70 / 0.50 / 0.30 · hover a star for why, click for the fingerprint
Radial fingerprint · population percentiles

Two profile shapes drawn over the same axes: overlap is what makes them comps, gaps are where they part. Heim, Jonah in signal, the comp in amber.

ATH · bats L · 402 PA

Ranked comps for Heim, Jonah

#PlayerSimilarityAgrees onDiffers onOpen
01 Grissom, Vaughn LAA · R · 474 PA 0.82 Sweet-spot rateAvg exit velocityWhiff rate Sprint speed +1.4zSwing length -0.8zIn-zone contact +0.6z
02 Lee, Brooks MIN · L · 655 PA 0.76 Bat speedxwOBA on contactOppo rate Swing length -1.3zIn-zone contact +1.1zSprint speed +0.9z
03 Rocchio, Brayan CLE · L · 632 PA 0.75 Fly-ball rateWhiff rateWalk rate Sprint speed +1.7zBarrel rate -0.9zSwing length -0.7z
04 Varsho, Daulton TOR · L · 546 PA 0.74 Pull rateWhiff ratexwOBA on contact Sprint speed +1.7zBat speed +0.9zGround-ball rate -0.8z
05 O'Hearn, Ryan PIT · L · 472 PA 0.72 Pull rateWhiff rateBat speed Hard-hit rate +1.3zSprint speed +1.2zxwOBA on contact +1.0z
06 Cortes, Carlos ATH · L · 392 PA 0.70 Barrel rateBat speedxwOBA on contact Oppo rate +1.5zSwing length -1.3zChase rate -0.9z
07 Springer, George TOR · R · 536 PA 0.69 Fly-ball rateStrikeout rateGround-ball rate Chase rate -1.4zSprint speed +1.4zMax exit velocity +0.9z
08 Palacios, Richie TB · L · 420 PA 0.66 xwOBA on contactStrikeout rateChase rate Walk rate +1.5zFly-ball rate -1.2zSprint speed +1.1z
09 Albies, Ozzie ATL · L · 732 PA 0.66 Whiff rateIsolated powerOppo rate Sprint speed +1.5zPull rate +1.3zFly-ball rate +1.3z
10 Naylor, Josh SEA · L · 665 PA 0.65 Walk rateSwing lengthAvg exit velocity Isolated power -1.5zFly-ball rate -1.1zIn-zone contact +1.0z
11 Altuve, Jose HOU · R · 596 PA 0.64 Swing lengthWalk rateHard-hit rate Sprint speed +1.9zPull rate +1.4zBat speed -0.9z
12 Kelly, Carson CHC · R · 448 PA 0.64 Barrel rateAvg exit velocityMax exit velocity Swing length -1.6zChase rate -1.4zOppo rate +1.0z

Weighted RMS z-distance over 6 feature groups, standardized within the qualified population; similarity = exp(-alpha * d^2), one global fixed transform. xwOBA excluded by design: this matches profile shape, not outcome twins. Descriptive, not predictive.