Originally Posted by topflightpro

Baseball denies it, but the general consensus is that baseball tweaked the exterior coating, making the balls a bit more aerodynamic, which allowed them to travel farther but also reduced the ability of pitchers to make the balls move. There is enough evidence over the course of one season to prove that something is different given how far balls traveled and how much pitchers struggled during the regular season.

But, come the post season, pitches started moving more and balls were not traveling as far, at least in the early rounds.

And Baseball owns Rawlings, which makes the balls.