The Japanese Gyroball Mystery - The New York Times

Daisuke Matsuzaka - Wikipedia

E-Ticket: Chasing the Demon Sphere

Not Much to Matsuzaka's Mystery Pitch - The New York Times

Different Types of Sliders : r/baseball

Tom Caron: In Boston 17 years ago, the hype was about a different Japanese pitcher

The Riddle - Sports Illustrated Vault

Yankees' Masahiro Tanaka Epitomizes the Japanese Approach to Baseball - The New York Times

Shuuto - Wikipedia

The Japanese Gyroball Mystery - The New York Times

Not a dicey deal - Deseret News

Japan's Kodai Senga Brings Ghost Fork Pitch to Mets - The New York Times

Japan's Kodai Senga Brings Ghost Fork Pitch to Mets - The New York Times

February 22