Tip - How to Grip a One-Seam Fastball | eHow

The fastball is one of the most commonly used pitches in baseball, in part because it can be thrown using a variety of grips. The two most common types of fastball are the four-seam and two-seam varieties, but there are rare instances of pitchers using a different variety. Some Japanese pitchers, including Yu Darvish, work with an alternate grip...