The Comp Constellation

Profile-shape similarity over six weighted feature groups, standardized within this season's 264 qualified hitters (202+ 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. Semien, Marcus in signal, the comp in amber.

NYM · bats R · 338 PA

Ranked comps for Semien, Marcus

#PlayerSimilarityAgrees onDiffers onOpen
01 Bellinger, Cody NYY · L · 419 PA 0.72 Hard-hit ratexwOBA on contactSwing length Walk rate +1.6zStrikeout rate -1.0zAvg exit velocity +0.9z Player Projection Swing lab
02 Yastrzemski, Mike ATL · L · 273 PA 0.69 In-zone contactWhiff ratePull rate Avg exit velocity +1.2zSwing length -1.0zWalk rate +0.9z Player Projection Swing lab
03 Adames, Willy SF · R · 396 PA 0.65 Ground-ball ratexwOBA on contactBarrel rate Bat speed +1.4zStrikeout rate +1.1zIsolated power +1.0z Player Projection Swing lab
04 Larnach, Trevor MIN · L · 307 PA 0.63 xwOBA on contactChase rateIn-zone contact Swing length -1.6zWalk rate +1.3zBat speed +1.2z Player Projection Swing lab
05 Tucker, Kyle LAD · L · 400 PA 0.62 Isolated powerWhiff rateMax exit velocity Walk rate +1.7zSprint speed -1.4zSwing length -1.2z Player Projection Swing lab
06 Wetherholt, JJ STL · L · 421 PA 0.61 Isolated powerIn-zone contactxwOBA on contact Avg exit velocity +1.3zPull rate -1.3zBat speed +1.3z Player Projection Swing lab
07 Varsho, Daulton TOR · L · 328 PA 0.61 Avg exit velocityStrikeout rateIsolated power Bat speed +1.5zPull rate -1.4zChase rate +1.2z Player Projection Swing lab
08 Steer, Spencer CIN · R · 378 PA 0.60 Whiff rateSweet-spot rateIn-zone contact Ground-ball rate +1.6zAvg exit velocity +1.3zOppo rate +1.1z Player Projection Swing lab
09 Lile, Daylen WSH · L · 426 PA 0.60 Hard-hit rateWhiff rateGround-ball rate Oppo rate +1.7zChase rate +1.5zBat speed +1.0z Player Projection Swing lab
10 Paredes, Isaac HOU · R · 393 PA 0.58 Swing lengthBat speedChase rate Sprint speed -2.4zGround-ball rate -1.0zxwOBA on contact -0.9z Player Projection Swing lab
11 Arenado, Nolan AZ · R · 361 PA 0.57 Max exit velocityWhiff rateStrikeout rate Sprint speed -2.1zSwing length +1.5zSweet-spot rate -1.0z Player Projection Swing lab
12 Schneemann, Daniel CLE · L · 275 PA 0.57 Oppo ratexwOBA on contactHard-hit rate Swing length -1.7zSweet-spot rate -1.4zWhiff 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.