Gyroball Origin
There are three schools of thought on the creation, or manifestation, of the gyroball pitch.
Theory #1: Using this model of the human arm:

Japanese scientists discovered a certain arm rotation and release of the ball will give a pitch a “bullet-like” rotation to it, causing a sharp, last second and very dramatic cut to the ball. Dumb.
Theory #2: The most well known and obviously true version of its creation;The Japanese Goddess of Awesome blessed the arm of Daisuke Matsuzaka with the ability to throw an amazing super pitch that strikes out anybody, is invisible and smells like cinnamon.
Theory #3: The stupidest of the notions is that there is no such thing as a gyroball, that it was just a theory and has never been actually duplicated or thrown by anybody ever. Whoever thought up this was obviously a stupid idiot that has never witnessed the amazing power of the gyroball, and if they ever did, they would probably punch themselves in the dick until they passed out.