where is the ball kicked off from in football
Kickoff (gridiron football) The line where the ball is placed for kickoff varies among the rule books. It is placed on the kicking team's 30-yard line in six-man football, 35-yard line in college and professional outdoor football, 40-yard line in American high school football, 45-yard line in amateur Canadian football, and the goal line in indoor and arena football. For the 2016 season only, the Ivy League placed the ball on the 40-yard line in conference games.[1] All players on the kicking team except the kicker (and, if used, a holder) must not cross the line at which the ball is placed until the ball is kicked. The receiving team must stay behind the line that is 10 yards from where the ball is placed. The ball can be fielded by the receiving team at any point after it has been kicked, or by the kicking team after it has traveled 10 yards or has been touched by a member of the receiving team. In American football (but not Canadian) touchback and fair catch rules apply to the kicked ball. If it is fielded by the kicking team, it is called an onside kick. A low, bouncing kick is called a squib kick. Although a squib kick typically gives the receiving team better field position than they would if a normal kick had been used, a squib kick is sometimes used to avoid giving up a long return, as well as use up a valuable amount of time on the clock, as it is impossible to fair catch such a kick. It is usually done when a team takes the lead in the final seconds, and is done to safely run out the remainder of the clock. Squib kicking with more than 20 seconds remaining has had unfortunate results (a line drive kick is more common when there are 20 to 50 seconds remaining; the typical hurry-up offense drive takes over a minute), but has been done by some teams.