Four Perspectives: How Do MLB and MiLB Balls Differ?
Pitchers need to get used to a different ball when they reach the big leagues. The variance is slight, but it is nonetheless noticeable. That was the opinion of four pitchers to whom I spoke, and facts back up their feelings.
According to a source within Major League Baseball:
- The MLB ball is made in Costa Rica, and the MiLB ball is made in China.
- The MLB balls cost more.
- There are some differences in the materials, such as the kind of leather.
- Tests are conducted, and the performance of the balls are in line with one another. Even so, major-league pitchers on rehab assignment are allowed to use MLB balls during their minor-league outings.
That last bullet point seems especially telling. Given the availability of that option, there is clearly a difference.
Here is what the handful of hurlers — all of whom pitched in both MLB and Triple-A last season — told me in mid September. Along with the physical feel of the spheroid, pitch movement and the carry of fly balls were also addressed.
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On the Construction and Feel of the Ball
Ben Heller: “It seems like it’s a bit tighter in the big leagues. And the ball is slicker, too. The way they rub it down here makes it a little slicker in your hand, so I find myself trying to get a little moisture to counteract that.”