MLB approves use of electronic device to relay signs to pitchers

Arizona Diamondbacks pitchers embracing new PitchCom technology

From sign-stealing to sticky stuff, Yankees work the angles against Blue Jays

Giants catchers, pitchers adjusting to fingerless signs with PitchCom

MLB rule changes: Robo umps, shift banning, gambling are coming - Sports Illustrated

Major League Baseball approved use of electronic device for catchers to signal pitches in effort to eliminate sign stealing - ABC13 Houston

Brewers agree to extended deal with pitcher Aaron Ashby, add reliever Jake McGee

The Astros stole signs electronically in 2017 — part of a much broader issue for Major League Baseball - The Athletic

Use of one-way electronic devices approved in college baseball

MLB rule changes: Robo umps, shift banning, gambling are coming - Sports Illustrated

Rays tuned in to new electronic pitch-calling technology

MLB sign stealing: History of allegations before Astros, Red Sox scandal - Sports Illustrated

MLB sign stealing: History of allegations before Astros, Red Sox scandal - Sports Illustrated

MLB to test electronic device for catchers to give signals to pitchers - ESPN

Sign stealing - Wikipedia