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. Fermín, José in signal, the comp in amber.

STL · bats R · 389 PA

Ranked comps for Fermín, José

#PlayerSimilarityAgrees onDiffers onOpen
01 Hicks, Liam MIA · L · 589 PA 0.69 Whiff rateMax exit velocityxwOBA on contact Swing length -1.3zIn-zone contact +1.1zSprint speed -1.1z Player Projection Swing lab
02 Schanuel, Nolan LAA · L · 463 PA 0.67 Pull rateStrikeout rateBarrel rate Swing length -1.2zSweet-spot rate +1.1zSprint speed -1.1z Player Projection Swing lab
03 Loftin, Nick KC · R · 446 PA 0.67 Avg exit velocityIn-zone contactxwOBA on contact Fly-ball rate +1.4zWhiff rate +1.0zSweet-spot rate +0.9z Player Projection Swing lab
04 Lee, Jung Hoo SF · L · 592 PA 0.67 Fly-ball rateWhiff rateHard-hit rate Chase rate +1.3zPull rate -1.1zOppo rate +1.0z Player Projection Swing lab
05 Rocchio, Brayan CLE · L · 632 PA 0.65 xwOBA on contactAvg exit velocityHard-hit rate Chase rate +1.6zWhiff rate +1.6zIn-zone contact -0.9z Player Projection Swing lab
06 Perdomo, Geraldo AZ · L · 695 PA 0.64 Avg exit velocityStrikeout rateSprint speed Walk rate +2.3zSwing length -1.3zSweet-spot rate +1.1z Player Projection Swing lab
07 McNeil, Jeff ATH · L · 533 PA 0.63 Isolated powerAvg exit velocityBarrel rate Chase rate +2.1zSweet-spot rate +1.3zOppo rate +1.2z Player Projection Swing lab
08 Palacios, Richie TB · L · 420 PA 0.62 Hard-hit ratexwOBA on contactAvg exit velocity Chase rate +1.7zWalk rate +1.2zWhiff rate +1.2z Player Projection Swing lab
09 Durbin, Caleb BOS · R · 618 PA 0.60 Strikeout rateBarrel rateWalk rate Avg exit velocity -1.4zGround-ball rate +1.4zPull rate -1.0z Player Projection Swing lab
10 Vargas, Ildemaro AZ · L · 506 PA 0.58 Sprint speedOppo rateIn-zone contact Chase rate +2.6zBat speed +1.0zWalk rate -0.8z Player Projection Swing lab
11 Gilbert, Drew SF · L · 410 PA 0.57 Avg exit velocitySwing lengthSprint speed Whiff rate +1.5zxwOBA on contact +1.2zSweet-spot rate +1.2z Player Projection Swing lab
12 Marsee, Jakob MIA · L · 629 PA 0.56 Fly-ball rateChase rateAvg exit velocity Swing length -1.7zWalk rate +1.7zOppo 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.