A universal receiver device and system. In one embodiment, a perimeter of a device includes a pair of fixed members and one pivotable member that is pivotable between an upward and downward direction. The device includes an inner billiard ball receiving cavity that may retain fifteen billiard balls. The result is a hybrid triangle for easily, and consistently, tightly racking billiard balls.

A ball rack for positioning and arranging billiards balls is disclosed. The ball rack includes a formation-shaping frame, having a pair of frame arms. Further the formation-shaping frame is coupled to a billiards-ball door. The ball rack further includes a pair of rear portions provided on each respective frame arm. Further a pair of door supports are provided on the pair of the rear portions. Each door support extends upwardly from the pair of frame arms and is configured to receive a door shaft, a door panel coupled to the door shaft, and a biasing spring configured to move the billiards-ball door between an opened position, and a closed position about a door pivot axis. The ball rack as disclosed may further include a spherical protrusion mounted on the pair of arms. The spherical protrusion enables easy sliding of ball rack without disturbing the tightly racked balls.