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 less than two primary grips for the fastball.
( z1 grip :ARG1 ( z2 fastball ) :mod ( z3 primary ) :quant ( z4 less-than :op 2 ) )