👉 Fastballs are a type of baseball pitch used in the American League (AL) and National League (NL) for which they are named. They consist of two pitches, one with a speed that is typically faster than a slider or curveball, and another with a slower speed. Fastballs are often used to generate velocity and power against right-handed batters, who may be more susceptible to the change in pitch direction compared to left-handed batters.