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The 1st and Ten line displays the yard line needed for a first down during an ESPN Sunday Night Football broadcast.. 1st & Ten is a computer system that augments televised coverage of American football by inserting graphical elements on the field of play as if they were physically present; the inserted element stays fixed within the coordinates of the playing field and obeys the visual rules ...
Most distances on a football field are expressed in terms of yards. The goal lines span the width of the field and run 10 yards (9.1 m) parallel to each end line. The 100 yards between the goal lines where most gameplay occurs is officially called the field of play in the NFL rulebook. Additional lines span the width of the field at 5-yard ...
In American football and Canadian football, the hash marks are two rows of lines near the middle of the field that are parallel to the side lines.These small lines (4 in [10 cm] wide by 2 ft [61 cm] long) are used to mark the 1-yard sections between each of the 5-yard lines, which go from sideline to sideline.
It is a marked field line, perpendicular to the sidelines, that designates out of bounds at each end of the playing field. It is measured 30 feet (10 yards) from the edge of the marked goal line toward the field of play to the inside edge of the marked end line, so that the marked line itself is considered out of bounds. [2]
The penalty area (colloquially "the 18-yard box" or just "the box") is similarly formed by the goal-line and lines extending from it, but its lines start 18 yards (16.46 metres) from the goalposts and extend 18 yards (16.46 metres) into the field. i.e. this is a rectangle 44 yards (40.23 metres) by 18 yards (16.46 metres).
The goal line is the chalked or painted line dividing the end zone from the field of play in gridiron football. In American football the goal lines run 10 yards (9.1 m) parallel to the end lines, while in Canadian football they run 20 yards (18 m) parallel to the dead lines.
Transfer wheel line marker. A line marker is a device or machine with which lines or markings are drawn on a sports field or pitch. They were originally developed to mark out lawn tennis courts on grass, but later also became used in many other sports with outdoor pitches. The marked lines are often white, but may be any color.
The chain gang. In gridiron football, the chain crew (commonly known as the "chain gang") is a crew that manages signal poles on one of the sidelines.There are three primary signal poles: the "rear rod" that marks the beginning of the current set of downs, the "forward rod" that marks the line to gain, and the "box" that marks the line of scrimmage.