Head String Meaning in Billiards

The head string is an invisible line that runs horizontally across the head of the table. It connects the second pair of side diamonds closest to the break end. This line defines the area known as the kitchen where you must place the ball. During a break, the base of the cue ball must be behind this line to be legal. It also plays a role in certain foul rules where balls must be played into the open table. Many tables have small marks on the side rails to help you identify its location. For example, a player places their cue ball just behind the head string for the opening break. This ensures they follow the tournament rules and start the game fairly for everyone. Understanding this boundary is essential for setting up and starting every match of pool correctly. It is a fundamental landmark for table geography and rule enforcement.