First off, I usually throw 88-90, in highschool over that on some occasions. But, I think i’m losing alot of velocity due to not using my legs. I switched my leg kick a little and that helped my velocity by like 2 miles and hour. I also think that I am not bending my front leg enough, also my ball release is very early in my arm action and i think holding onto the ball longer would help. Also I am pretty sure I am not using any of my core or legs. Also, not using my legs, could possibly lead to injury. I was also just wondering if i am bending more up and down instead of turning at my hips.
Just click on the link and it will have the 3 different videos on the youtube page