The try/convert is among the oldest parts of the game of gridiron football and dates to its rugby roots. In its earliest days, … See more

In American high school football (in most states), the play is over once the ball becomes dead or the defense takes possession. In many other levels of football, including the CFL, NFL, and American college foot… See more

In American high school and college football, the line of scrimmage is the three-yard line (a small hashmark is denoted on the field of this in the middle of the 3-yard line), with the kick taking place at the 10-yard line for a 20-yard a… See more

In 1968, the AFL and NFL eliminated the extra-point kick for interleague preseason games, allowing only one-point scrimmage plays called "Pressure Points"; this was scrapped when both leagues began their regular sea… See more

• Comparison of American and Canadian football#Points after touchdown
• Glossary of American football See more

• Media related to Conversion (gridiron football) at Wikimedia Commons See more