[Brant Bowen]

Ogre is right it doesn't really matter because it is a 5-point penalty, but the way we called it at the Boilermaker Regional was that the two mid-field referees would keep track of the backbot and if it crossed the line at any point, they would call the penalty on that team. If after the 5 second buffer time the alliance had no established backbot (which rarely happened), I beleive they noted the penalty on the alliance as a whole and the scoring table just put the penalty into one of team's penatly points for the purpose of scoring the match correctly.