How to throw a sinker and a fork?

Question

im a firstbaseman i hardly ever pitch infact i never pitched on my highschool team. i kno how to throw a fastball, cutter, and slurve very effectivly but i would like to add these two other pitches.

Answer 1

Sinker is to throw with a greal follow through
Do not snap your wrist.
Two fingers over the ball and apply yourself.
You need to use the rubber to get leverage and you can do this.
Use your legs as well.

Answer 2

Why add them both there basically the same pitch?

Answer 3

hold it like a curve.. but instead of snapping your wrist.. push down