Seven-ball

Seven-ball is a contemporary rotation pool game with rules similar to nine-ball, though it differs in two key ways: the game uses only seven object balls as implied by its name, and play is restricted to particular pockets of the table. William D. Clayton is credited with the game's invention in the early 1980s.

At the start of the game, balls one through seven are racked in a hexagonal configuration, with the 1-ball placed at the rack's apex, centered over the table's foot spot, the 7-ball placed at the rack's center, and all other balls placed clockwise (see photo top right). Immediately following the break shot, the opponent must elect three pockets along one of the table's long rails, and the player who broke is automatically assigned the three pockets situated along the opposite long rail. Once that selection is made, balls 1–6 may be pocketed (potted) in any pocket in rotation, starting with the one, as the object ball. Balls pocketed via combinations off of the object ball are legal. The 7-ball must be pocketed in the called side to be a legal win. Scratches on any object ball allow the opponent ball-in-hand, but the sunk ball remains potted. Scratching on the 7-ball is a loss. Pocketing the 7-ball in any other pocket than the called side is a loss.

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