SelectionDecision quality
What did he choose?
Evaluates swing and take decisions in the context in which they occurred.
Reading NorthStar
Three questions. No mystery grade.
Start with Selection, Contact, and Damage. Then use familiar outcomes such as wOBA, xwOBA, and RE24 to check the shape against conventional context.
ContactBat-to-ball
Did he execute the swing?
Compares actual contact with how difficult those swings were expected to be.
DamageImpact
What did contact become?
Measures contact quality relative to the opportunities that produced it.
Example profile
98 · 4 · 100
98 Selection — exceptionally strong contextual decisions.
4 Contact — weak contact execution relative to swing difficulty.
100 Damage — elite contact quality relative to opportunity.
Compare hitter shapes ↗Glossary
The terms NorthStar uses.
Percentile
League-relative rank within the available 2025 NorthStar hitter sample.
Selection
Swing/take decision quality after accounting for pitch and game context.
Contact
Contact execution relative to the modeled difficulty of the swings taken.
Damage
Quality of contact relative to expected damage opportunity.
wOBA
Weighted On-Base Average, shown as an established offensive reference metric.
xwOBA
Expected wOBA based on Statcast quality-of-contact inputs.
RE24
Run expectancy change across plate appearances, reported per 100 PA when available.
Chase rate
How often a hitter swings at pitches outside the strike zone.
Barrel rate
Share of batted balls meeting Statcast barrel exit-velocity and launch-angle thresholds.
Selection, Contact, and Damage are contextual diagnostics. They are not combined into an overall score or presented as standalone predictive-skill claims.