How to throw a faster fastball<br>Perfect your grip. There are two primary grips for the fastball: the four-seam and the two-seam. The four-seam generally gathers more velocity but some pitchers find the two-seam more comfortable and easier to command.
There are two primary grips for the curve ball: the four-seam and the two-seam.
( z1 and :op ( z2 grip :quant 2 :ARG1 ( z3 ball :ARG1-of ( z4 curve ) ) :mod ( z5 primary ) ) :op ( z6 grip :ARG1 z3 :mod ( z7 primary ) ) :ARG1-of ( z8 mean :ARG2 ( z9 and :op ( z10 seam :quant 4 ) :op ( z11 seam :quant 2 ) ) ) )