But that doesn't mean their fastballs have been equally effective. Syndergaard has gotten whiffs on 11 percent of his four-seam fastballs, or 70 percent better than league average. Ventura has gotten whiffs on 7 percent of his fastballs, just 8 percent better than league average. So why has Syndergaard's fastball had better results than Ventura's? There is an answer to that question, even if it's a complex one. Let's take a closer look.
What makes a fastball good?
The short answer is high velocity and good movement.