I learned about the conversion safety today, where an NCAA team attempting an extra point can get a one-point safety if the kick is blocked but the defending team takes the ball into the endzone and gets tackled.
I couldn't figure out if this is the case, but I was wondering if the defending team could score one point in the same way. Suppose the kicking team attempts the extra point, which is blocked and grabbed by the defense, and they run it back - but the player with the ball fumbles it close to the endzone, and a player from the kicking team recovers it but his momentum carries him into the endzone, where he is tackled. I realize this is a very implausible situation, but would this be a way that a team could theoretically finish with a score of 1?