The 'One Point Slam,' also known as a one-point safety, is an exceptionally rare American football scoring play. It occurs during an extra point or two-point...
It's a rare scoring play in American football where, during an extra point or two-point conversion attempt, the offensive team (who just scored) gains possession and then commits a safety in their own end zone, awarding one point to the defense.
A regular safety awards two points and can happen anytime during regulation play. A one-point safety specifically awards one point and can only occur during an extra point or two-point conversion attempt, under precise circumstances involving the offensive team.
While it has never occurred in the NFL, a one-point safety has happened at the collegiate level. A notable instance was in 2004 when Maine scored one point against Western Kentucky during a conversion attempt.
For a one-point safety to happen, several unlikely events must align: the offensive team must gain possession during their own conversion try, and then be tackled or run out of bounds in their own end zone, with the ball ruled dead there. This specific sequence is extremely improbable.