Remember the gyroball? We're still waiting! - SBNation.com
The Hot Corner: Pitch Design is Here to Stay
WholeHogSports - Kopps nears 10-10 club
Not Much to Matsuzaka's Mystery Pitch - The New York Times
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
How to Throw a Gyroball: 15 Steps (with Pictures) - wikiHow
Matsuzaka Supposed Gyroball - YouTube
Pitch Design Resource - Baseball Development Group
Pitch Movement, Part III: The River of Seams - Apr 2, 2020 - Blog - TexasLeaguers.com
The Gyroball
How to Throw a Gyroball: 15 Steps (with Pictures) - wikiHow