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. Fermín, José in signal, the comp in amber.
STL · bats R · 327 PA
Ranked comps for Fermín, José
| # | Player | Similarity | Agrees on | Differs on | Open |
|---|---|---|---|---|---|
| 01 | Loftin, Nick KC · R · 374 PA | 0.71 | Bat speedAvg exit velocityxwOBA on contact | Fly-ball rate +1.2zWhiff rate +1.0zSweet-spot rate +0.8z | Player Projection Swing lab |
| 02 | Perdomo, Geraldo AZ · L · 589 PA | 0.68 | Hard-hit rateAvg exit velocityWhiff rate | Walk rate +2.1zSwing length -1.3zSweet-spot rate +1.0z | Player Projection Swing lab |
| 03 | Hicks, Liam MIA · L · 502 PA | 0.66 | xwOBA on contactWhiff rateMax exit velocity | Swing length -1.3zSprint speed -1.1zIn-zone contact +1.1z | Player Projection Swing lab |
| 04 | Schanuel, Nolan LAA · L · 463 PA | 0.65 | Pull rateBarrel rateIsolated power | Sweet-spot rate +1.3zSwing length -1.3zSprint speed -1.1z | Player Projection Swing lab |
| 05 | Rocchio, Brayan CLE · L · 523 PA | 0.63 | Avg exit velocityMax exit velocityHard-hit rate | Chase rate +1.8zWhiff rate +1.6zIn-zone contact -1.0z | Player Projection Swing lab |
| 06 | Lee, Jung Hoo SF · L · 518 PA | 0.63 | Whiff rateHard-hit rateSprint speed | Chase rate +1.5zPull rate -1.3zWalk rate -1.0z | Player Projection Swing lab |
| 07 | Yoshida, Masataka BOS · L · 316 PA | 0.62 | In-zone contactStrikeout rateMax exit velocity | Bat speed +1.6zGround-ball rate +1.6zHard-hit rate +1.1z | Player Projection Swing lab |
| 08 | Bregman, Alex CHC · R · 625 PA | 0.60 | Chase rateOppo rateIn-zone contact | Isolated power +1.5zBarrel rate +1.0zHard-hit rate +0.9z | Player Projection Swing lab |
| 09 | Frelick, Sal MIL · L · 349 PA | 0.59 | Bat speedBarrel rateWalk rate | Ground-ball rate +1.8zSweet-spot rate -1.2zSprint speed +1.1z | Player Projection Swing lab |
| 10 | Gilbert, Drew SF · L · 356 PA | 0.59 | Avg exit velocitySwing lengthSprint speed | Whiff rate +1.5zSweet-spot rate +1.5zOppo rate +1.2z | Player Projection Swing lab |
| 11 | Durbin, Caleb BOS · R · 519 PA | 0.58 | Barrel rateWalk rateStrikeout rate | Avg exit velocity -1.3zGround-ball rate +1.3zPull rate -1.3z | Player Projection Swing lab |
| 12 | Palacios, Richie TB · L · 344 PA | 0.57 | Isolated powerxwOBA on contactBat speed | Chase rate +1.7zWhiff rate +1.4zWalk 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.