(I realize I’m echoing what’s already been said here)
My D3 freshman son’s roommate is a pitcher. He grew up in California. Even in a baseball hotbed in high school he could occasionally leave one a little too much over the plate and (especially if it was the bottom half of the order) get away with it, even more so if it had some velocity.
In college, and yes even in D3, that pitch gets hammered by the entire lineup, and even more so if it’s a fastball that doesn’t move much.
The other thing is in college, you aren’t going to get ahead in the count by simply throwing a fastball on the first pitch. College hitters are hunting that and will either barrel up that pitch or get replaced