College Baseball Was On the Clock and Chose an Electronic Wristband
Vanderbilt Baseball Debuts 'Pitch-Signaling' Wearable Devices
The Island Chronicles The official blog of the Harrisburg
MLB looking at electronic system for calling pitches
Wristbands For Pitchers? Some Colleges Embrace New Way To Call
College Baseball Teams Using Wristbands To Send Signals; MLB Next?
MLB approves use of electronic pitch calling - The Boston Globe
Vanderbilt baseball debuts wearable 'pitch-signaling' devices to
NHIAA: communication devices allowed – New Hampshire Hardball
College Baseball Was On the Clock and Chose an Electronic Wristband
Vanderbilt Using “Electronic Wrist Bands”