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

Matsuzaka's First Pitch Is Welcome Relief for Red Sox - The New York Times

Sake-Drenched Postcards - Unwinding the Mystery of the Gyroball (Part IV)

Prospect Retrospective: Masahiro Tanaka, RHP, New York Yankees - Minor League Ball

Sake-Drenched Postcards - Unwinding the Mystery of the Gyroball (Part IV)

2012 spring training -- Andrew Bailey's surgery puts Boston Red Sox in early hole - ESPN

Kodai Senga and the ghost forkball: What can we expect?

Daisuke Matsuzaka, Baseball Wiki

Daisuke Matsuzaka - Wikipedia

Shohei Ohtani and MLB's Japanese Pitcher Fragility Myth - The Ringer

The mystery of Shohei Otani and whether he'll leave $200M on the table to play in MLB

How a bunch of big NY Mets' decisions went down, and why they are significant; all your Subway Series coverage, right here – New York Daily News

E-Ticket: Chasing the Demon Sphere

Record-Chasing Japanese Pitching Phenomenon Sasaki Rōki Heralds a New Era for Japanese Baseball

Daisuke Matsuzaka expected to start Saturday for Boston Red Sox

Bobby Valentine Is Perfect Manager to Finally Harness Daisuke Matsuzaka's Immense Talent