A Mathematical Dive Into the Strike Zone
10 Things Wrong with Youth Baseball and Softball (And How We Can Fix Them) - Little League
They're testing a ball/strike challenge system in the minor leagues - Bleed Cubbie Blue
What Can MLB Do to Solve Its Expanding Strike Zone Problem?, News, Scores, Highlights, Stats, and Rumors
How the Strike Zone Actually Works
Fixing MLB's Strike Zone - a Challenge System Proposal
Dick Monfort's Rockies can be fixed. Here's how, from pitching to analytics to athleticism.
The Strike-Zone Revolution - The New York Times
Why baseball offenses are struggling and how MLB can fix it
Pokin Around: Why doesn't the digital-strike-zone-box match the real MLB strike zone? - Springfield Daily Citizen
Why baseball offenses are struggling and how MLB can fix it
What is the Strike Zone in Baseball?
The Pitching Mechanics of Throwing Strikes - Driveline Baseball
MLB umpires get support from players in 'perfectly imperfect' game
Can You Strike Out a Major League Baseball Player by Pitching Super Slow?