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Better Pitching? Mets Think It's in the Wrist, and the Preparation - The New York Times
MIL@PIT: Players and umps wear wristbands for SU2C - YouTube
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Own The Zone Sports | Wristbands - Baseball & Softball Wristband Sign System
New college baseball wristband rule may thwart sign stealing
Chris Creamer on Twitter: "Major League Baseball players and umpires are wearing gold ribbons and wristbands today The details here: https://t.co/Eegnxk9v28 https://t.co/oNOf688b0z" / Twitter
High School Baseball: Wristbands more common as way to deliver signals
New NCAA wristband rule could block sign stealing
BASEBALL: Making sense of the coded wristband system