Robot umpire: Baseball edges closer to implementing automatic strike zone in major leagues

MLB umpires agree to electronic strike zone testing and development for ' robot umps' in new union deal

Major League Baseball expands 'robot umpire' use throughout all 30 Triple-A ballparks

MLB umpires willing to let computers call balls and strikes: report

Robo umps will help bring baseball into the 21st century — in more ways than one - The Washington Post

There's no way you're fooling a machine': A first-person look at the robot umpire system being tested by MLB

Robot Umpires Strike Zone: It's Not as Simple as You ThinkBaseball Prospectus

Robot Umpires Strike Zone: It's Not as Simple as You ThinkBaseball Prospectus

Is baseball ready for robot umpires? We fielded an informal survey at the MLB All-Star Game in Seattle – GeekWire

Robot umpire debuts at Las Vegas Ballpark with little fanfare, Ron Kantowski, Sports

Futures Game a perfect showcase for ball-strike challenge system