The Comp Constellation

Profile-shape similarity over six weighted feature groups, standardized within this season's 257 qualified hitters (334+ 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. Johnston, Troy in signal, the comp in amber.

COL · bats L · 462 PA

Ranked comps for Johnston, Troy

#PlayerSimilarityAgrees onDiffers onOpen
01 Larnach, Trevor MIN · L · 449 PA 0.65 xwOBA on contactFly-ball rateStrikeout rate Barrel rate +1.6zSwing length +1.0zChase rate -1.0z Player Projection Swing lab
02 O'Hearn, Ryan PIT · L · 465 PA 0.64 Max exit velocityAvg exit velocityWalk rate Sweet-spot rate -1.7zBarrel rate +1.5zSwing length +1.1z Player Projection Swing lab
03 Freeman, Freddie LAD · L · 675 PA 0.63 Bat speedSwing lengthAvg exit velocity Barrel rate +1.7zChase rate -1.1zOppo rate +1.1z Player Projection Swing lab
04 Rocchio, Brayan CLE · L · 602 PA 0.63 Oppo rateIsolated powerIn-zone contact Sweet-spot rate -1.6zSwing length +1.3zAvg exit velocity -1.2z Player Projection Swing lab
05 Marsh, Brandon PHI · L · 579 PA 0.61 Chase rateWhiff ratePull rate Barrel rate +1.7zSprint speed +1.4zSwing length +1.2z Player Projection Swing lab
06 Cortes, Carlos ATH · L · 386 PA 0.61 Bat speedWalk rateSprint speed Sweet-spot rate -1.6zOppo rate +1.2zChase rate -1.2z Player Projection Swing lab
07 Caratini, Victor MIN · L · 396 PA 0.61 Hard-hit rateAvg exit velocityWhiff rate Chase rate -1.6zSweet-spot rate -1.4zSprint speed -1.4z Player Projection Swing lab
08 Jung, Josh TEX · R · 457 PA 0.59 Fly-ball rateSweet-spot rateBat speed Barrel rate +1.5zHard-hit rate +1.5zChase rate -1.1z Player Projection Swing lab
09 Bailey, Patrick CLE · L · 351 PA 0.58 Walk ratePull rateAvg exit velocity Sweet-spot rate -2.0zSwing length +1.3zStrikeout rate +1.1z Player Projection Swing lab
10 Realmuto, J.T. PHI · R · 476 PA 0.54 Walk rateAvg exit velocityWhiff rate Sweet-spot rate -1.8zSwing length +1.7zSprint speed +1.4z Player Projection Swing lab
11 Grissom, Vaughn LAA · R · 465 PA 0.54 Bat speedStrikeout rateFly-ball rate Sweet-spot rate -2.4zBarrel rate +1.4zSwing length +1.2z Player Projection Swing lab
12 Karros, Kyle COL · R · 488 PA 0.54 Fly-ball rateWhiff rateAvg exit velocity Chase rate -1.9zBarrel rate +1.5zMax exit velocity +1.3z Player Projection Swing lab

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.