The modern-era two point conversion, by run or pass, started in 1958.
1958
Florida State 1958 when playing Tenn Tech in Tallahassee. They were the first game of the season after the rule change
Obviously its two points for the returning team.
The NFL adopted the 2 point conversion in 1994.
1 point
2 point conversion
Yes. In the NFL the play is over if you intercept it. In college football, you can return it the other way for two points.
In college football, yes, except it counts as a 2-point "defensive conversion," not a touchdown. In the NFL, no. As soon as the defense takes possession, the ball would be dead.
when you complete a series of downs to start another,for example,if it is 3rd down and 3 yards and you get it it is an conversion. A conversion can also mean a point after touchdown or a two point conversion after a touchdown.
Click on the Related Links below for the NFL 2 point conversion chart.
Attempt a two point conversion
Not in the NFL. Once the offense loses control of the ball -- with an incomplete pass, interception, or tackle -- the play is dead. In college and Canadian football, however, the defense can return the ball and score a 2-point defensive conversion.