Variations of the Fastball


A two-seam fastball is one of the most frequently thrown pitches in baseball. A right-handed pitcher will usually see the ball move down and in toward a right handed hitter—or down and away from a left handed hitter, as seen in the GIF above. The pitch is held by the pitcher placing his or her index finger and middle fingers in between the two seams that run vertically up the baseball. When releasing the baseball, the pitcher can put more pressure on one of the two fingers, and the baseball will break in that direction. You will find many pitchers who throw the traditional four-seam fastball over 100 miles per hour on the Major League Baseball level.

Similarly for a sinker, both fingers can be placed on the seams, although depending on preference, you may move the index finger slightly inwards. “Pitchers don’t usually consider how air flows over baseballs, and nobody has ever really looked at it on a micro level,” said Smith. “People throw balls and watch where hittrax for sale used they go, but I don’t think anyone has ever made very careful measurements of what is happening around the ball.” Researchers at Utah State University are breaking down the physics of a new baseball pitch that’s been getting a lot of attention. This generates a backspin on the ball that remains throughout the pitch.

In terms of movement, the four-seam fastball is traditionally a very straight pitch with no arc or side to side movement. With this pitch, you are using your strength against the batter’s strength in an effort to overpower them. Sadly, most of the kids who come to us in high school are cemented into throwing just a 2-seam fastball, a circle change, and a curve. Their hand size changes – as does their entire body and build – but their Little League and travel league coaches are often the same guys.

If you believe adding velocity could be critical to your success, check out my proven programs for pitchers of all ages. Four-seamer usage is declining again this season to 33.5%, replaced by more sweeping sliders and downward-breaking curves. Not only has it spread within the Seattle clubhouse, but it’s back in fashion among other major leaguers. He’s the veteran leader on a loaded pitching staff that includes young, talented starters Logan Gilbert and George Kirby. There are so many reasons why I love baseball – I played from a young age through college and it’s my favorite sport to watch so I’ve always followed it very closely.

After some basic research with Rapsodo and a high-speed camera, we can tell you with 100% certainty it’s not the pitchers fault. Unfortunately, unbeknownst to most pitching coaches, the seams alone don’t create the movement. It’s important to consider that both sinkers and two-seam fastballs can fall similarly on a horizontal and vertical break plot.