Major League Baseball and Rawlings, which is owned by Major League Baseball, are changing the baseball for the 2021 season according to a memo obtained by The Athletic’s Ken Rosenthal. There’s some science-stuff in the article if you want to try to dive into it, but it’s also worth noting that there’s not enough information known about the change in the baseball to truly know how much it’s likely going to change the way the ball moves through the air. While we know that the way the inside is changing a little bit, we don’t know how that will effect the drag on the ball – which is the larger issue.