The Comp Constellation

Profile-shape similarity over six weighted feature groups, standardized within this season's 258 qualified hitters (286+ 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 · 415 PA

Ranked comps for Johnston, Troy

#PlayerSimilarityAgrees onDiffers onOpen
01 Larnach, Trevor MIN · L · 416 PA 0.67 xwOBA on contactFly-ball rateStrikeout rate Barrel rate +1.5zSwing length +1.1zSweet-spot rate -1.0z Player Projection Swing lab
02 Jung, Josh TEX · R · 409 PA 0.65 Strikeout rateWalk rateBat speed Hard-hit rate +1.2zBarrel rate +1.1zChase rate -1.1z Player Projection Swing lab
03 Caratini, Victor MIN · L · 362 PA 0.64 Hard-hit rateAvg exit velocityxwOBA on contact Chase rate -1.7zSprint speed -1.2zBarrel rate +1.1z Player Projection Swing lab
04 Smith, Dominic ATL · L · 302 PA 0.63 Ground-ball rateSprint speedWalk rate Sweet-spot rate -2.0zFly-ball rate +1.1zBarrel rate +1.0z Player Projection Swing lab
05 Freeman, Freddie LAD · L · 593 PA 0.62 Bat speedSwing lengthAvg exit velocity Barrel rate +1.7zOppo rate +1.2zChase rate -1.0z Player Projection Swing lab
06 O'Hearn, Ryan PIT · L · 419 PA 0.61 Max exit velocityGround-ball rateIn-zone contact Sweet-spot rate -1.7zBarrel rate +1.5zSwing length +1.2z Player Projection Swing lab
07 Rocchio, Brayan CLE · L · 523 PA 0.61 Ground-ball rateIn-zone contactBat speed Sweet-spot rate -1.8zSwing length +1.4zAvg exit velocity -1.1z Player Projection Swing lab
08 Rutschman, Adley BAL · L · 358 PA 0.60 xwOBA on contactGround-ball rateBat speed Chase rate -1.7zWhiff rate -1.3zBarrel rate +1.3z Player Projection Swing lab
09 Marsh, Brandon PHI · L · 526 PA 0.59 Whiff rateChase rateAvg exit velocity Barrel rate +1.6zSprint speed +1.6zSwing length +1.2z Player Projection Swing lab
10 Cortes, Carlos ATH · L · 334 PA 0.57 Sprint speedWalk rateBat speed Sweet-spot rate -1.6zChase rate -1.4zOppo rate +1.2z Player Projection Swing lab
11 Grissom, Vaughn LAA · R · 367 PA 0.55 Strikeout rateIsolated powerFly-ball rate Sweet-spot rate -2.5zSwing length +1.3zBarrel rate +1.2z Player Projection Swing lab
12 Schanuel, Nolan LAA · L · 463 PA 0.54 Barrel rateSwing lengthxwOBA on contact Chase rate -1.6zSweet-spot rate -1.5zWhiff rate -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.