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.[1]

For the magazine, see 7ball.
Seven-ball rack showing specially designed 7 ball.

Rules

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 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.[2]

A special 7-ball was designed for television matches by Charles Ursitti (billiards historian, referee and Willie Mosconi's one time manager) to address the problem that the color of the seven and three balls in a standard set of pool balls are nearly indistinguishable when viewed on a TV screen.[1] The ball adopts the stripe of the 9-ball with the color of the solid black 8-ball, the "money balls" of their respective namesake games. A similar effect can be achieved with a standard 15-ball set, substituting the striped 15 for the seven, after which, on coin-operated tables, a second game may then be played with the striped 9 to 14, and the solid seven as the money ball.

Racking up a game with the diamond rack and a regular 7 ball

No special equipment is required for play in pool halls or home pool rooms. As illustrated to the left, a regular set of pool balls and a nine-ball diamond rack turned sidewise are adequate.

The original informal incarnation of seven ball led to a variant professional ruleset that enjoyed a brief heyday in the Sudden Death Seven-ball series of pro tournaments, broadcast on the American cable TV network ESPN from 2000 to 2005.

gollark: Black is "timed out". Orange is "HTTP error status". Red is " actively failed somehow".
gollark: Purple is "oh bee onstat implosion".
gollark: Anyway. Green is "it works" with varying luminance depending on latency.
gollark: Is it running my patched version?
gollark: I should probably deploy my own (subtly incompatible of course!) GEORGE monitors.

References
  1. Shamos, Michael Ian (1993). The Illustrated Encyclopedia of Billiards. New York, NY: Lyons & Burford. pp. 206. ISBN 1-55821-219-1.
  2. Billiard Congress of America, ed. (2005). Billiards: The Official Rules and Records Book. Billiard Congress of America. pp. 59–61.
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