NFHS 2-35 suggests, " RFP signifies the referee (not anyone else) has (concluded) signaled the ball may be put in play by a snap or free kick and the 25 second clock is to begin." It implies that BOTH teams are, in fact, ready to play, and that neither team is authorized to either unnecessarily delay staring play, or demand gaining an unearned, inappropriate advantage by starting play before the opponent has had reasonable opportunity, to be ready. (Reasonable opportunity to be ready to play, as determined EXCLUSIVELY by the referee)