Baseball Stats Glossary
Plain-English definitions of the stats that actually matter for youth and travel baseball — each with the formula, what a good number looks like, and how to read it in context rather than on its own. No number tells the whole story alone; the value is in the pattern across them.
Hitting
The single number that combines how often a hitter reaches base with how much power they hit for.
How often a batter reaches base per plate appearance — hits, walks, and hit-by-pitches all count.
Total bases per at-bat — weights a double, triple, and home run above a single.
The most famous hitting stat — hits divided by at-bats — and why it tells you less than it seems to.
A coach’s stat that credits productive plate appearances, not just hits.
Pitching
Earned runs allowed per nine innings — the common single-number summary of run prevention.
The daily pitch limits and required rest that keep youth arms healthy, by age group.
See every one of these on your own team
GameLense calculates these stats automatically from your GameChanger data and reads them together in one season view — so you see the full picture, not one number at a time.
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