The Wall Street Journal: MLB study finds baseballs aren’t juiced, but they are more aerodynamic

Major League Baseball finally acknowledged on Thursday what had long been suspected. The baseball themselves are, at least in part, responsible for the increase in home runs across the sport dating back to the 2015 season. But the committee of 10 scientists MLB assembled to conduct a study into this power surge couldn’t answer one crucial question: What changed?

MLB’s study concluded that the balls have become more aerodynamic, flying farther through the air with less resistance. That isn’t due to any meaningful difference in the size, weight or seam height of the balls. The balls aren’t any bouncier off the bat.

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