"Batters are so accustomed to gearing up for the heat that so-called “soft throwers” — merely in the low 90s — now find it easier to exploit the art of pitching.
“They’re always looking to hit the fastball, and I personally think that’s helped my game,” Giants reliever George Kontos said. “A little bit of movement — whether it’s a sink or a cut or a good change-up — will have guys mis-hitting the ball just off the sweet spot.”"
I confess I have been trying to convince my son to try one of these weighted ball velocity programs. He has refused. He is smarter than I am.