Dave, it is primarily due to the specific duties of the two officials - R1 & R2. As an R2, we are responsible for observing the receiving team. therefore, we do not do signals having to do with the serve. Hope that helps.
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Jan G. Filip - San Jose, CA
EBVOA Rules Interpreter Emeritus
NCS Volleyball Officials Coordinating Committee Recorder
CIF State Volleyball State Championships Referee (2005), Scorekeeper (2006-2007) & Libero Tracker (2010)
PAVO State Referee (2014) / PAVO Certified Scorekeeper (2014) / PAVO Certified Line Judge (2012)
USAV Junior National Referee (resigned 2013) / USAV National Scorekeeper (2014)
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