Baseball, softball coaches opting for wristbands instead of traditional hand signs
Better Pitching? Mets Think It's in the Wrist, and the Preparation - The New York Times
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Navy 4 Inch Wristbands | USA Baseball Shop
Wristbands Used to Relay Baseball Signals
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Before Cespedes, there was another Met with amazing armbands: Tsuyoshi Shinjo | MLB.com