Games - Rack

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	Games - Rack

A rack is the name given to a frame (usually wood or plastic) used to organize billiard balls at the beginning of a game. Rack may also be used as a verb to describe the act of setting billiard balls in starting position in billiards games (usually, but not always, using a physical rack), as well as a noun to describe the balls in that starting position.

The most common shape of a physical rack is that of a triangle, with the ball pattern of 5-4-3-2-1. Racks are sometimes called simply "triangles" (most often by amateur shooters) based on the predominance of this form. Triangular-shaped racks are used for eight ball, straight pool, one pocket, bank pool, snooker and many other games. Although diamond-shaped racks, with an intended pattern of 1-2-3-2-1, are made for the game of nine ball, the triangular rack is more often employed in nine ball as well.

Racking in specific billiards games

Eight ball

In eight ball, 15 object balls are used. Under the Billiard Congress of America's it is prescribed that:

The eight ball must be in the center of the rack (the second ball in the three balls wide row).
The first ball must be placed at the apex position (front of the rack and so the center of that ball is directly over the table's foot spot).
The two corner balls must be a stripe and a solid. In theory, this pattern allows for a more equal chance of sinking both a solid and a stripe because the two corner balls are the most likely to be pocketed on the break.
All balls other than eight-ball are placed at random but in conformance with the preceding corner ball rule.
The balls should be pressed tightly together without gaps, as this allows the best break possible.

In amateur eight ball play, in contradistinction of the official rules, a racking variant that is often followed is:

The outer edges of the triangle must be in the pattern of solid, stripe, solid, stripe, etc. (resulting in the two corner balls being either both stripes or both solids).
Sometimes, the balls must be placed in numeric order from the top of the triangle down and from left to right, i.e., the one on the foot spot, followed by the two then three in the second row, and so on. This always results in the corner balls of the rack being both stripes (the 11 and 15 respectively).

Nine ball

In nine ball, the basic principles are the same as detailed in the eight ball section above, but only balls 1-9 are used; the one ball is placed at the rack's apex over a table's foot spot, and the nine ball is placed in the center of the rack.

Some players (most often amateurs) place the balls in numeric order but for the nine ball; from the top of the triangle down and from left to right, i.e., the one on the foot spot, followed by the two then three in the second row, and so on. However, all balls other than the one and nine may be randomly placed. Note that racking in numeric order in nine ball, unlike in eight ball, does not result in a contravention of the official rules.

In nine ball games where a handicap is given by one player being spotted a ball, some tournament venues enforce a rule that the spotted ball must be racked as one of the two balls in the row directly behind the one ball.

Straight pool (14.1 continuous)

In the initial rack in straight pool, 15 balls are racked in a triangular rack, with the center of the apex ball placed over the foot spot, and the balls in random order.

Straight pool is played to a specific number of points agreed on prior to the match's start, with each pocketed ball being worth one point to the shooter. Because the game is played to a number of points normally far in excess of the 15 points total available in the initial rack (in tournament play, 150 points), multiple intergame racks are necessary. Intergame racking employs a separate set of rules from those in place at the game's start.

After the initial rack, the balls are played until only the cue ball and one object ball remain on the table's surface. At that time, the 14 pocketed balls are racked with no apex ball, and the rack is so placed so that if the apex ball were in the rack, its center would rest directly over the table's foot spot. Play then continues with the cue ball shot from where it rested and the 15^th ball from where it rested prior to racking.

A number of rules have developed which detail what must be done when one or both of the cue ball and 15^th object ball are either in the rack area at the time an intergame rack is necessary, or are in such close proximity to the intergame racking area, that the physical rack cannot be used without moving the one or the other. The rules also vary depending on whether the cue ball or 15^th ball are resting on the table's head spot. Such rules are detailed on the following chart (note therein that the kitchen refers to the area behind a pocket billiard table's head string).

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Games - Rack

Racking in specific billiards games

Eight ball

Nine ball

Straight pool (14.1 continuous)

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