Is a heavier or lighter bat better for a kid?

The heaviest bat your player can still control. If the swing slows or comes late with the heavier bat, go lighter: control beats weight.

The rule

Swing the heaviest bat you can control: if bat speed drops with the heavier bat, go lighter (Warstic, Sam Bat); re-baseline Blast after any bat change.

The hold test

Hold the bat by the knob, one hand, arm straight out from the shoulder, for 10 to 20 seconds. If the barrel dips or the arm shakes, the bat is too heavy: go one drop lighter at the same length, or one inch shorter at the same drop. Passing the test does not mean your player can go heavier.

Where this comes from

Every rule, with its source, is on How the fit works.

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