The Comp Constellation

Profile-shape similarity over six weighted feature groups, standardized within this season's 255 qualified hitters (336+ 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 · 469 PA 0.63 Avg exit velocityMax exit velocityBat speed Sweet-spot rate -1.8zBarrel 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 Marsh, Brandon PHI · L · 583 PA 0.62 Whiff rateChase ratePull rate Barrel rate +1.7zSprint speed +1.4zSwing length +1.2z Player Projection Swing lab
05 Rocchio, Brayan CLE · L · 606 PA 0.61 Ground-ball rateOppo rateIn-zone contact Sweet-spot rate -1.7zSwing length +1.3zAvg exit velocity -1.2z Player Projection Swing lab
06 Caratini, Victor MIN · L · 400 PA 0.61 Hard-hit rateAvg exit velocityWhiff rate Chase rate -1.7zSweet-spot rate -1.4zSprint speed -1.4z Player Projection Swing lab
07 Cortes, Carlos ATH · L · 390 PA 0.61 Bat speedSprint speedWalk rate Sweet-spot rate -1.7zOppo rate +1.2zChase rate -1.2z Player Projection Swing lab
08 Bailey, Patrick CLE · L · 356 PA 0.59 Walk ratePull rateAvg exit velocity Sweet-spot rate -1.8zBarrel rate +1.3zSwing length +1.3z Player Projection Swing lab
09 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
10 Grissom, Vaughn LAA · R · 470 PA 0.55 Bat speedStrikeout rateFly-ball rate Sweet-spot rate -2.3zBarrel rate +1.4zSwing length +1.2z Player Projection Swing lab
11 Karros, Kyle COL · R · 492 PA 0.54 Whiff rateFly-ball rateAvg exit velocity Chase rate -1.8zBarrel rate +1.5zMax exit velocity +1.3z Player Projection Swing lab
12 Realmuto, J.T. PHI · R · 478 PA 0.53 Walk rateAvg exit velocityxwOBA on contact Sweet-spot rate -1.9zSwing length +1.7zSprint speed +1.4z 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.