When must the Scorer receive each team's roster before a match?

The correct response highlights the timing requirements for roster submission in volleyball officiating. Teams are required to provide their rosters to the Scorer ten minutes before the end of pre-match warm-up. This timeline ensures that the Scorer has adequate time to prepare for the match, including verifying player eligibility and entering the necessary information into the score sheet.

Additionally, having the rosters submitted at this time allows for any discrepancies or issues to be resolved before the match starts, maintaining the flow and integrity of the game. Submitting the roster too late or at an indeterminate time could lead to confusion or delays that might disrupt the match schedule. Thus, establishing a clear deadline enhances organization and efficiency in officiating procedures.