The Japanese Gyroball Mystery - The New York Times

Edgy Is the Crown of the Hit Kings - The New York Times

Mysterious ball appears on Japanese beach - CBS News

The Japanese Gyroball Mystery - The New York Times

The Riddle - Sports Illustrated Vault

E-Ticket: Chasing the Demon Sphere

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

The Gyroball

Gyroball - Wikipedia

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Remember the gyroball? We're still waiting!

Each MLB Team's Best Sales Pitch to Recruit 2-Way Phenom Shohei Ohtani, News, Scores, Highlights, Stats, and Rumors

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

Kodai Senga Thrives In His Mets Debut, Beating Marlins - The New York Times