Hash mark (sports)

In ice hockey, the hash marks are two pairs of parallel lines on either side of the face-off circles in both ends of the rink.

Players must remain on their team's side of the hash mark nearest their own goal during a face-off until the puck hits the ice.

Prior to the adoption of hash marks (which were first utilized at the first NFL playoff game in 1932), all plays began where the ball was declared dead, including extra point attempts.

The hashmarks in that indoor 1932 playoff game were originally 30 feet (9.1 m) from the sideline, and that width was adopted by the NFL for the 1933 season.

[5] A Canadian football field width is 65 yards (195 ft; 59 m), 35 feet (11 m) wider than in the American game.