SQUAWK BOX
Burbanks 4 Pocket Strike Zone is designed for specific pitching location.
4 Pocket Strike Zone
The Ever-Changing Strike Zone
Calling Balls & Strikes - UmpireBible
The Major League Strike Zone
Out of the Frame: The Effect of an Electronic Strike Zone on Catching - The Crawfish Boxes
Have You Seen This? Batter does the splits, strike zone shrinks accordingly
What is the Strike Zone in Baseball?
A simple strike zone formula and calculating plate discipline stats - Beyond the Box Score
An automated strike zone was used in some Arizona Fall League games - Bleed Cubbie Blue
Strike Zone, Glossary
The Strike Zone in Baseball
What happens if baseball changes the strike zone? - MLB Daily Dish
StrikeZone: Tabletop Baseball Game by Koolbots — Kickstarter
Little League Umpiring 101.com - visual training for beginning umpires - Strike Zone