How to throw a spitball<br>Put a small amount of saliva or vaseline on the baseball. The object is to create resistance and a change in the uniform weight of the ball to make its motion more unpredictable and difficult to hit. There's no " right place " to put it, since the object is unpredictability, as with a knuckleball.
a spitball feels different than a regular baseball
( z1 feel :ARG1 ( z2 spitball ) :ARG2 ( z3 differ :ARG1 z2 :ARG2 ( z4 baseball :ARG1-of ( z5 regular ) ) ) )