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

With This Japanese Ace, the Ghost Stories Are True When pitchers and catchers report next month, the Mets will get a look at Kodai Senga's signature pitch: the ghost fork. Those

Matsuzaka Masterpiece: Glimpses of Greatness in Arm of Teenager - The New York Times

Mets' Kodai Senga brings his ghost forkball, aces curiosity

Johan Santana shows he is Mets' ace and No. 1 pitcher Red Sox are missing – New York Daily News

Pitcher Perfect: Health Check - Sports Illustrated

Mets' Kodai Senga facing myriad adjustments on and off field

Calaméo - 04_25_14

Mets spring training primer: Inside look at biggest storylines

Santa Fe New Mexican, Sept. 22, 2014 by The New Mexican - Issuu

Greatest Pitches in Baseball Of All Time – Legends Clothing Co.

An Analysis of the Gyroball – Society for American Baseball Research

Baseball Prospectus 2012 by Baseball Prospectus - Ebook

Even Dice-K's feeling a bit dicey about closing games