Team 1 and 2 have gone to overtime.
-Team 1 gets the ball first and can only manage a field goal, taking a 3 point lead.
-Team 2 now needs a field goal to extend overtime, or a touchdown to win.
- Team 2 takes possesion and on thier 2nd play from scrimmage hits the fullback on a reverse screen for big yardage. As he takes the intial hit and spins for additional yardage the ball comes lose and is picked up by a linebacker who runs up the sideline untouched for a touchdown.
A: Will the touchdown count on the final score even though they technically already won when they recovered the fumble?
or B: Did the game end as soon as the fumble was recovered by the defense, even though the play was still live?
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The touchdown will count if the fumble was recovered while the player was still on his feet and advanced for the score. In high school ball, the scenario would've ended the game without the score counting.

That game would ends as soon as a turnover happens and the guy who recovered the ball on defense is down or when his knee hits the ground or goes out of bounds. If he scores the TD it is also over.

A: The score will count if there is no penalty on the play

A: Yes it should since there was no stoppage in play
B: No. The game didn't end until the play ended.

A, let him have the points it raises his draft stock!