Okay, I admit that I spent way too much time looking online for bat rolling online. After a couple hours of looking at vendor sites, YouTube and reading up on the issue, it is pretty clear that detecting it is almost impossible. Basically, the bat rolling machines squeeze the resin that interlocks the composite fibers enough that they weaken. This creates a trampoline effect and a few sites show huge differences in exit speed and restitution. The bat manufacturers know that composite bats break down over time and make their bats 'less hot' when new, so that they will comply after a hundred hits or so. I found a couple associations that have banned composite bats altogether due to how they react when broken in. The new baseball equipment magazines are out and Junior's new toys cost $300 or so. Roll 'em and add another $75, void the warranty and speed up the process of it finally breaking down completely. Nice.
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