The ball is different again, and it’s changing the way pitches move. Now what?
Now there’s new research from Glenn Healey and Lequan Wang in the electrical engineering and computer science departments at the University of California, Irvine which shows that as the seam height changes, the movement on pitches changes. By using optical and radar tracking, and correcting for weather effects, Healey and Wang were able to graph the movement of pitches by season in major league baseball.