A field designed in Japanese professional baseball, giroball is rarely released in the major leagues (although Daisuke Matsuzaka is known to use it in it). The eephus is one of the rarest pitches ever thrown in baseball and is known for its exceptionally low speed and ability to catch a batsman off guard. You might think that the rarest pitch in the game is the knuckle-ball, only two throwers throw it regularly at this time. But there is one release that only Brad Ziegler releases frequently.
The most famous eephus of all time will always be the one that Bill “Spaceman” Lee threw to Tony Perez in the seventh game of the 1975 World Series. The Red Sox won 3-0 in the sixth, and that's when Lee decided it would be a good idea to break the rainbow. Perez waited and waited, and drilled the ball over the Green Monster. When you consider what's at stake, it was probably the most ill-advised pitch in the history of baseball.
You might think that the game's rarest release is the knuckle: only two launchers release it regularly right now. Of all the releases that you would encourage your child to never try, the wacko is at the top of the list. Ziegler admitted that taking advantage of the change had been difficult, but said the pitch had more to do with the change in speed than with movement. Usually, an ephus throws very high into the air, resembling the trajectory of a slow-pitch softball field.
Shuuto is another field not commonly seen in Major League Baseball, but is used more frequently in Japanese leagues. It falls like a break pitch, and probably because it's spinning the ball that looks like a three-quarter curve. Throughout the history of baseball, several unorthodox pitches have been developed and, although they are not seen very often, they can make opposing batters turn their heads (and block their knees). The fork is more popular in Japan, which could explain why Junichi Tazawa is one of three pitchers who have thrown real forkball this year (see him strike out J.
It has been used by pitchers for more than 100 years, most notably by Christy Mathewson and Fernando Valenzuela). With a phone full of pictures of the fingers of the jugs, rare beers and his two young children, Eno Sarris can be found in the stadium or in a brewery most days. The theory behind the field of play is that it cuts abruptly at the end, giving it a pronounced descending plane that makes it difficult to contact the ball. Usually, pronas (“pulls down” inside the ball for a right hand) with the change and supine (pull down the outside of the ball) with throws that break.
Before him, the most notable thrower to use knuckle ball effectively was Phil Niekro, who is widely considered to be one of the greatest knuckle players of all time. The field of play is not launched very often, but Carlos Zambrano and Kazuhito Tadano have used it in recent years. But for a hitter who is able to maintain his weight and make a normal swing on the field of play, it's the easiest pitch to throw in baseball: one without unexpected movements or excessive speed. There's nothing complex about the eephus, it's a very slow curve that looks like a typical lollipop presentation.
There are some discussions about how to classify this field. FanGraphs says it's a knuckle, Brooks Baseball says change, but in order to believe in incredible things, I stick with FanGraphs.