Masahiro Tanaka Throws a Strike That Was Possessed by Demons
Remember the gyroball? We're still waiting! - SBNation.com
ESPN.com - E-Ticket: Chasing the Demon Sphere
How to Throw a Gyroball: 15 Steps (with Pictures) - wikiHow
Taiwanese high school pitcher throws a gyroball : r/baseball
The Gyroball
ℳatt on Twitter: "Related: Stroman's 2-seamer grip is kinda funky! Could "laminar-flow FB" be the new gyroball, or is this A Thing? https://t.co/s3MwQzE9mJ" / Twitter