In high school i gradually changed my entire career.
My freshman year i was probably high 70's
My sophmore year i was in the low 80's
My junior year i jumped from low 80's to consistently 87-88
I had surgery my senior year and did not rehab properly and my velocity was 80-83.
Luckily the recruiting process for most Division I schools takes place mainly your junior year. Haha.
Anyway, entering my freshman year of college i was throwing 86-88 occasionally hitting 90.
This year my sophmore year, we just concluded the fall and ive been anywhere from 82-91. I am struggling with consistency and it may be an arm slot problem.
I have not seen hitters bailing out or not swinging with a purpose since high school. Division I is a completely different world. 1-9 is a #4 hitter from a good high school team. Speed of the game is dramatically different.
Any more questions feel free to ask me.