Reading the current 2025 profile from the NorthStar API.
Born San Francisco, CA, USA
League-relative percentiles show where this player sits on each NorthStar lens. The midpoint marker is the 50th percentile.
Marcus Semien's Selection profile grades among the highest in the profiled 2025 hitter sample. This describes swing/take decision quality after accounting for pitch and game context.
Higher than about 92% of profiled hitters on this measure.Marcus Semien's Contact profile sits near the middle of the profiled 2025 hitter sample. This is contact relative to the modeled difficulty of the swings taken, not raw contact rate alone.
Higher than about 59% of profiled hitters on this measure.Marcus Semien's Damage profile grades below most hitters in the profiled 2025 sample. This describes contact quality relative to the opportunities presented.
Higher than about 31% of profiled hitters on this measure.The supporting measures stay visible so the contextual lenses can be checked against familiar outcomes rather than treated as mysterious scores.
Chase rate 23.6%
1,728 modeled decisions
Observed contact 79.5%
1,045 modeled swings
NorthStar axes are contextual diagnostics. This page intentionally does not calculate a single overall player score, grade, or standalone predictive-skill claim.
.341
7.1%
385 batted balls
.295
.318
-0.95