Ok so i’m a lefthanded pitcher and i get arm side movement on both my four and two seam fastballs. So im trying to develop a good cutter to bust guys inside and on the hands and suprise em every now and then when they are lookin for the lefty tail. ive only tried it in the bullpen once and it was gettin good movement when i had had good grip and implemented good finger pressure. I estimate when i was throwing it (the good ones that had good cut) were probably 5 mph slower than my four seam. So my question is how much slower is your cutter than your fastball for those of you who throw a cutter?
I appreciate any comments and advice