Gyroball ... fact or fiction?: In their book The Secret of the Miracle Pitch, Japanese researchers using supercomputers modeled a potentially unhittable breaking pitch called the gyroball. Baseball has been simmering with debate over whether anyone can actually throw it. Seekers of the elusive pitch claim that Japanese superstar and MVP of the 2006 World Baseball Classic Daisuke Matsuzaka throws one, and cite this high-speed video (YouTube) as an example. Another video exists, of high school ace Joey Niezer purported throwing it. If it actually exists, the Gyroball would be the first new pitch developed in almost 40 years. (via edverb on MetaFilter).