MLB on Twitter: "This pitch might have broken physics. https://t.co/9M62Y5gzRt" / Twitter
The Mystery of the Vanishing Screwball - The New York Times
How to Throw a Screwball: 11 Steps (with Pictures) - wikiHow
Various Mets talking about Daniel Herrera's screwball | Tedquarters
The Screwball
A Close Up Of A Baseball With A Screw Sticking Out Of It, Symbolizing The Baseball Pitch The Screwball. Stock Photo, Picture And Royalty Free Image. Image 6590730.