Offensive alignments are usually titled numerically; the first number refers to the number of players who serve primarily as attackers, the second number referring to the number of players serving primarily as setters.  The 5-1 offense has five potential attackers and only one setter. In the Bearcat 5 - 1, the setter is positioned opposite a player that in each rotational alignment will be a defensive player. When the setter is in the center back position, her 'opposite' will push back from her center front position to assume the center back position, hiding the setter. The setter is not part of the serve reception and will move to her playing position when the serve is contacted, staying out of the path of the serve enroute to her playing position. The 5-1 is considered a multiple offense because the setter penetrates to the net from the back row during three rotations, allowing unrestricted attacks from all three of the front row players in those rotations. The graphics below illustrate the serve reception positions of the players when the setter is in each of the three back row positions. The red lines in each graphic indicate the possible overlap lines the setter, and her 'opposite', must avoid to remain in her rotational position prior to the serve. The setter must be careful to stay clear of any player attempting to receive the serve as the setter transitions to the setter playing position.