Velocity and velocity projections

Question
I have a 65-70 mph fastball, 51-55 mph change-up, 55- 58 curveball at age 13.

In letter grade A-F how good are those pitches velocity I can throw them 53-33 strikes to balls, how hard would my velocity be in mph if I stay healthy at age 18

Answer
hi david
thanks for the question.

at age 13 you are doing well. no one can predict what you will be like at 18 because kids grow at different paces.

your strike to ball ratio is good. keep working on this to improve and try to get a 7-3 ratio. this is tough to do.

work your change now much more than your curve--ok to have a curve if you are throwing it properly, but too many kids and coaches fall in love with the curve at the expense of a great change.

work on your fastball location so you can go in/out and up/down.

keep working hard and have fun!

steve