Safety rules in American football, explained.

How officials judge a safety

1. Locate the ball when it becomes dead. A safety question usually starts when the ball is in, on, or behind a team's own goal line.
2. Identify the team responsible for the ball being there. Rulebooks often call this force or impetus.
3. Confirm possession, recovery, or status of the loose ball. A runner tackled in the end zone is different from an incomplete pass, a kick, or a fumble out of bounds.
4. Check whether forward progress ended outside the end zone. If the runner's progress was stopped in the field of play, the spot may be outside the goal line.
5. Look for special exceptions, especially the momentum exception after an interception, catch, or recovery near the goal line.
6. Apply any end-zone foul. Some offensive fouls from behind the goal line create a safety even if the ball itself did not become dead there in ordinary play.

What a safety is

A safety is not a defensive touchdown. It is a separate scoring result worth 2 points. The most familiar version happens when the offense has the ball near its own goal line and the ball carrier is tackled in the end zone. The defense scores 2 points, and the team that gave up the safety must usually put the ball back in play with a free kick.

A safety can also happen without a tackle. If the offense snaps the ball over the punter's head and the ball goes out of bounds behind its own goal line, the offense supplied the force and the ball became dead behind that goal line. If an offensive player commits intentional grounding from the end zone, or another foul that is enforced from behind the goal line, the result can also be a safety.

Who put the ball in the end zone?

The central safety question is usually force. If a team carries, passes, fumbles, bats, snaps, or otherwise supplies the force that sends the ball behind its own goal line, and the ball becomes dead there in that team's possession or out of bounds, a safety is likely.

If the opponent supplied the force, the result is often not a safety. For example, if a punt is downed in the receiving team's end zone, the kicking team supplied the force, so the usual result is a touchback rather than a safety. The same idea can apply to a fumble, backward pass, or kick, but details vary by rulebook and by whether a player creates a new force after the ball arrives.

Plays that often produce two points

• Tackle in the end zone: a ball carrier is downed with the ball behind their own goal line and forward progress was not stopped in the field of play.
• Bad snap or fumble: the offense sends a loose ball into or through its own end zone and it becomes dead there or out of bounds behind the goal line.
• Intentional grounding: the passer throws the ball away illegally from the end zone.
• Holding or another offensive foul in the end zone: if the enforcement spot is behind the goal line, the penalty can result in a safety.
• Blocked kick chaos: if the kicking team is responsible for the ball ending behind its own goal line and it becomes dead there, the defense may score a safety.

Key exceptions and no-score results

• Incomplete pass: an incomplete legal forward pass is not converted into a safety just because the passer released it from or near the goal line. Intentional grounding from the end zone is different.
• Touchback: if the opponent supplied the force that put the ball into the end zone and it becomes dead there, the result is commonly a touchback.
• Momentum exception: when a defender intercepts, catches, or recovers the ball near the goal line and their original momentum carries them into their own end zone, many rulebooks give the ball to that team at the spot of possession rather than scoring a safety.
• Forward progress outside the goal line: if officials rule the runner's progress stopped before the ball crossed fully behind the goal line, the dead-ball spot is outside the end zone.
• Touchdown instead: if the opponent legally gains possession in the end zone, that may be a touchdown rather than a safety.

Ball position matters

Officials judge the ball, not the runner's whole body. If the ball is still in the field of play when the runner is down, there is no safety even if the runner's body is in the end zone. If the ball is behind the goal line and the runner is down in possession, the safety ruling becomes possible.

There is also an important difference between getting the ball out and being down in the end zone. In many codes, a ball carried from the end zone toward the field of play remains in the end zone until the entire ball is out. That can matter on quarterback sneaks away from the goal line, punt returns after a deep catch, and loose-ball recoveries near the line.

Penalties that create a safety

Some safeties are penalty-enforcement results. If the offense holds, intentionally grounds, illegally bats, or commits another applicable foul in its own end zone, the defense may be awarded a safety under the rulebook's enforcement rules. This is why a flag in the end zone can produce 2 points even when the ball is not carried down by contact.

The exact foul matters. Dead-ball fouls, double fouls, fouls after a change of possession, and fouls by the defense can be enforced differently. Officials first identify the foul, the spot, the team in possession, and whether accepting or declining the penalty changes the result.

What happens after a safety

After a safety, the team that was scored upon usually has to give the ball back with a free kick. The kick may be a punt, drop kick, or place kick depending on the code, and the yard line for the kick is rulebook-specific. In NFL rules, the team scored upon kicks from its 20-yard line; other levels and formats should be checked against their own rulebook.

The safety also affects clock and field position strategy. A team backed up near its own goal line may accept a safety late in a game to avoid a blocked punt or to run time, but intentional clock or unfair-act rules can still matter in unusual situations.

One-point safety situations

During a try after touchdown, some rulebooks allow a rare one-point safety. This can happen when the defending team is responsible for the ball becoming dead behind its own goal line during the try, or when a foul during the try has a safety-type enforcement result. These plays are unusual because the ball must travel the wrong way after a turnover, kick, fumble, or penalty sequence.

Do not assume every level treats defensive possession during a try the same way. NFL and NCAA rules allow certain defensive returns during tries, while many high school rules end the try when the defense gains possession. That difference changes whether a strange try play can keep going long enough for a one-point safety.

Misunderstandings to avoid

• "The defense tackled him, so it is a safety": only if the ball is dead behind the offense's own goal line and no exception changes the spot.
• "Any ball in the end zone is a safety": touchbacks, incomplete passes, touchdowns, and momentum exceptions are separate results.
• "The player's feet were out": body position can help determine the dead-ball spot, but the ball's location and possession are the key scoring facts.
• "A punt through the end zone is a safety": a kick through the opponent's end zone is normally a touchback, not a safety.
• "The defense caused the pressure": defensive pressure does not by itself supply the force that put the ball behind the offense's goal line.

Source material

• NFL Video Rulebook: Safety
• NFL Rulebook: Rule 11, Scoring
• NCAA Football Rules of the Game
• NFHS Football Rules Changes