I've just found out through some of my contacts that a few notable coaches are no longer using heavy baseballs in their velocity development training programs, so I asked around to confirm it. After doing a bit of research and questioning, I decided to make a video on why we'll continue to use heavy and light baseballs to replicate game stress that can't be found in a training facility or your long toss fields (generally).

Take a look and tell me what you think!